JP2009031840A - Drowsy driving preventing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve an arousal level of a driver, and to improve an effect of preventing drowsy driving by properly providing a comfortable and sufficient arousing effect to the driver. <P>SOLUTION: An apparatus detects a motion of a left leg portion of a driver to operate an air conditioner 103 for giving an active stimulus to the driver and providing a cool wind as a passive stimulus to the driver by a sensor 101, determines whether or not the motion of the driver detected by the sensor 101 intends to operate the air conditioner 103 by a control device 102, provides the cool wind having the passive stimulus to the driver by operating the air conditioner 103 under control of the control device 102 when the result of the determination shows the operating action, to move the left leg portion as the active stimulus, thereby arousing the driver. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention detects a dozing state of a driver of a vehicle, a ship operator, an operator of a plant, a mechanical device, or the like, and if a dozing state is detected, awakening is promoted to prevent a dozing operation About.

Conventionally, as this type of technology, for example, those described in the following documents are known (see Patent Document 1). In the technique described in this document, based on the fact that the decrease in the driver's arousal level changes over time, the determination of the driver's arousal state based on heart rate data and the driver's arousal level based on the steering angle data are performed. In other words, even if the vehicle continues to be driven even after a sign of a decrease in arousal level, it is possible to make a detailed determination of the level of arousal and make auditory stimulation according to the driver's level of arousal. By presenting passive stimuli (alarms) such as visual stimuli, the arousal level during driving is maintained. By adopting such a technique, it is possible to issue a doze prevention warning in a step-by-step manner according to a decrease in the degree of arousal without being affected by individual differences among drivers.
Japanese Patent Laid-Open No. 6-197888

  In such a conventional technology, in the state where the driver's arousal level is slightly lowered, that is, when the level of arousal level when the driver starts to become aware of drowsiness or is in conflict with the drowsiness, acceptance of passive stimulus presentation is accepted. There was a problem of low nature. Even if it detects an arousal level at which the driver's arousal level has dropped slightly and presents an alarm sound with a changed sound volume or sound quality, the driver is aware to some extent that the driver himself is sleepy at that level. For this reason, it may be assumed that it is not meaningful to present an alarm.

  In addition, when a stimulus that provides a sufficient arousal effect at this arousal level is presented, it is presumed that even if the driver feels bothersome, he / she rarely feels happy. Due to such concerns, there is a fear that the conventional technology does not effectively present the driver with a warning for preventing drowsy driving.

  Therefore, the present invention has been made in view of the above, and the purpose of the present invention is to promote the driver's arousal level by accurately presenting the driver with a comfortable and sufficient awakening effect, and to doze An object of the present invention is to provide a snooze driving prevention device with improved prevention effect.

  In order to achieve the above object, means for solving the problems of the present invention include passive stimulus presenting means for presenting a passive stimulus to a driver, active stimulus to the driver, and said passive stimulus presenting means. Detecting means for detecting a driver's motion including a predetermined body motion of the driver, and whether or not the driver's motion detected by the detecting means is an act of actuating the passive stimulus presenting means. If it is an act of action as a result of the determination, the passive stimulus presenting means is actuated, the driver is presented with a passive stimulus, and an active stimulus is brought to awaken the driver. And a control means.

  According to the present invention, when a passive stimulus that eliminates sleepiness during driving is obtained, an active stimulus that moves the body is requested by requesting a body movement suitable for eliminating sleepiness. Due to the synergistic effect of the passive stimuli resulting from the movement, a comfortable and sufficient arousal effect can be obtained. Thereby, the prevention effect of dozing driving can be heightened.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS The best embodiment for carrying out the present invention will be described below with reference to the drawings.

  The snooze driving prevention device of the present invention is a passive stimulus (cool air, fragrance, high-concentration oxygen air, rhythmic music, vibration by an air conditioner) presented by passive stimulus presentation means that comfortably eliminates the drowsiness of the driver while driving. When the driver wants the driver to activate the passive stimulus presentation means, the driver's body movement (leg movement, arm movement) is required to eliminate drowsiness. By adopting a system configuration that obtains active stimulation (body movement) and adopting such a configuration, synergy of active stimulation that moves the driver's body and passive stimulation that results from moving the body. It is a device that can provide a driver with a comfortable and sufficient awakening effect by the action. Hereinafter, this apparatus will be described in the order of Example 1 to Example 7. In addition, in FIGS. 1-24 concerning Example 1-Example 7, the component to which the same code | symbol was provided and described has the same function.

  1-3 is a figure which shows the structure of the dozing driving prevention apparatus which concerns on Example 1 of this invention. In the first embodiment, as shown in FIGS. 1 to 3, the passive stimulus presenting means is an auto air conditioner system (air conditioner) 103, and the driver who brings the active stimulus to the driver and operates the passive stimulus presenting means. The predetermined body movement is a left leg stepping motion, and includes a sensor 101 that functions as a detecting means for detecting a driver's leg movement and detects a leg movement, and a control device 102. It is configured.

  For example, in the example shown in FIG. 1, the sensor 101 is attached to the stepping surface of the footrest 104, and in the example shown in FIG. 2, the sensor 101 is attached to a portion where the upper part of the leg of the driver's seat 105 is abutted. Then, it is attached to the backrest portion of the seat 105, detects the stepping action of the left leg of the driver, and gives the obtained detection signal to the control device 102.

  The control device 102 functions as a control center for controlling the operation of the device, and is provided with resources such as a CPU, a storage device, and an input / output device necessary for a computer that controls various operation processes based on a program, for example, a microcomputer Etc. The control device 102 reads the detection signal from the sensor 101, sends a command to the passive stimulus presenting means based on the read signal and the control logic (program) held in advance, and stimulates the driver as described below. To control and control all the operations necessary to control the driver's arousal action.

  The control device 102 includes a determination circuit (not shown) that functions as a determination unit that determines whether or not the movement of the leg is a predetermined movement set in advance based on the detection signal obtained by the sensor 101. And a control signal transmission circuit (not shown) for sending a control signal for controlling the operation of the automatic air conditioner to the controller of the air conditioner 103.

  Next, with reference to the flowchart of FIG. 4, the flow of the operation | movement of the induction | guidance | derivation of the predetermined body movement in this Example 1 and passive stimulus presentation is demonstrated.

  In FIG. 4, first, based on the detection signal detected by the sensor 101, it is determined whether or not the stepping force equal to or greater than a preset predetermined value A has continued for a preset predetermined time T1 (step S401). ). The predetermined value A and the predetermined time T1, which are the determination reference values, include two types of muscles, a fast muscle and a slow muscle. Among these muscles, the slow muscle has many for controlling the balance and movement of the body. It is determined based on the knowledge that the nerve is connected to the brain, and the slow muscle contraction in the lower body is transmitted to the brain as a strong stimulus, so that the activation of the brain can be effectively promoted.

  As a result of the determination, when the driver feels drowsiness (to the extent that the passive stimulus is desired) while riding and desires a comfortable passive stimulus, the predetermined body movement required by the system is shown in FIG. As shown in FIG. 5 (a), a force 502 is applied to the left leg muscle 501 and the footrest 104 is continuously stepped on. If the above criteria are satisfied, the air conditioner 103 is already in operation. Whether or not (step S402). This is a determination to temporarily intervene in the control of the air conditioner 103 as a passive stimulus aiming at the awakening effect, but then return to the state before the intervention.

  As a result of the determination, if it is determined that the air conditioner 103 is in an OFF state, the air conditioner 103 is turned on (step S403), and if it is determined that the air conditioner 103 is already in an ON state, an air conditioner use flag is set. (Step S404). Thereafter, the operation of the air conditioner 103 is switched to level 1 in the warm-up mode set in advance (step S405).

  In level 1 of the warm-up mode, as shown in FIG. 5B, for example, the outlet of the air blower 503 by the air conditioner 103 is a ventilator, the set temperature is lowered to cool air, and the air volume is set stronger than before the intervention.

  Returning to FIG. 4, a timer for managing the presentation time of the passive stimulus by the cold air of the air conditioner 103 is started (step S406), and whether or not the time measured by the timer has reached a predetermined presentation time set in advance. Is determined (step S407). As a result of the determination, if it is determined that the predetermined presentation time has elapsed, the timer is stopped and reset (step S409). Thereafter, it is determined whether or not the air conditioner use flag is set (step S410). If the air conditioner use flag is not set, the air conditioner 103 is returned to the OFF state (step S411), and the air conditioner use flag is set. After returning the air conditioner 103 to the operation mode before setting the air conditioner use flag (step S412), the air conditioner use flag is lowered (step S413), and the process returns to the first step S401 to repeat the series of processes.

  On the other hand, if it is determined that the predetermined presentation time has not elapsed as a result of the determination in the previous step S407, then it is caused (detected) by the movement 502 of continuing to step on the muscle 501 shown in FIG. Stepping is performed with a stepping force that is stronger than the stepping force (produced by the operation 602 that continues to step on the muscle 601 shown in FIG. 6A), and this stepping is performed in advance by a stepping force that is greater than or equal to a predetermined value B set in advance. It is determined whether or not the set time has continued for a predetermined time T2 or more (step S408).

  As a result of the determination, if the above requirement is not satisfied, the process returns to the previous step S407. If satisfied, the set temperature of the blower 603 blown out from the air conditioner 103 is satisfied, as shown in FIG. The warm-up mode for further lowering or increasing the air volume is switched to level 2 (step S414).

  In the first embodiment, in order to simplify the explanation, the warm-up mode has been described as an example of switching in two stages of mode 1 and mode 2. However, the multi-stage control according to the depression force and the depression duration time is described. You may make it do. In this way, controlling the intensity of the passive stimulus according to the stepping force and the depression time matches the expectation of the feedback amount (passive stimulus amount) for human habitual movement, so driving in a more natural way The movement of the person's body can be induced.

  Thereafter, the timer is reset and restarted (step S415), so that the stimulus presentation with the set temperature and the air volume adjusted according to the driver's preference can be newly performed for a predetermined time, the previous steps S407 and S409 After sequentially executing the same processing (steps S416 and S417), the processing shown in the previous step S410 is executed.

  As described above, in the first embodiment, when the driver obtains a passive stimulus that promotes sleepiness and promotes awakening, the driver is requested to have an active stimulus. The awakening effect of the driver is enhanced, and a comfortable and sufficient awakening effect can be obtained. As a result, it is possible to improve the effect of preventing the driver from falling asleep.

  By making the movement of the driver who obtains passive stimulation the movement of the leg, a large awakening effect can be obtained by spontaneous leg movement (active stimulation).

  It is possible to improve the determination accuracy by determining the movement of the leg when obtaining the passive stimulus based on the operation time.

  By changing the presentation content of the passive stimulus based on the movement time of the leg motion when the passive stimulus is obtained, the passive stimulus can be presented in various ways, and the arousal effect can be improved.

  Since the attachment portion of the sensor 101 that detects the movement of the leg is used as the footrest surface, the movement of the leg from which active stimulation can be obtained can be reliably detected by a simple method. Alternatively, since the seat seat 105 is used as the attachment portion of the sensor 101 that detects the movement of the leg, it is possible to accurately detect that a particularly large thigh muscle is also moved in the leg. Or, since the mounting part of the sensor 101 that detects the movement of the leg is used as the backrest part of the seat, the movement of the leg that can be actively stimulated is detected, and at the same time, the driving posture is often lost when the arousal level is lowered Can be corrected.

FIG. 7 is a diagram illustrating the configuration of the snooze driving prevention apparatus according to the second embodiment of the present invention. The feature of the second embodiment is that, compared with the first embodiment, the passive stimulus presenting means is a car audio (system) 701 instead of the automatic air conditioner system (air conditioner) 103,
The predetermined body movement of the driver that brings active stimulation to the driver and activates the passive stimulation presenting means is the stepping motion of the left leg, and the others are the same as in the first embodiment.

  Next, with reference to the flowchart shown in FIG. 8, the flow of the operation | movement of the induction | guidance | derivation of the predetermined body movement in the said structure and passive stimulus presentation is demonstrated.

  In FIG. 8, based on the detection signal detected by the sensor 101, it is determined whether or not a rhythm exercise of a predetermined tempo is being performed (step S801). When the driver feels light sleepiness and desires a passive stimulus to listen to his / her favorite rhythmic music, the rhythm movement of a predetermined tempo required by the system is as shown in FIG. A force is applied to the muscle 901 of the left leg, and the toe portion of the left foot is preset as a motion 902 for hitting the footrest 104 intermittently.

  Returning to FIG. 8, when such a rhythmic exercise is performed, it is determined whether or not the audio 701 is in an activated state (step S802). Since it is assumed that one piece of music is reproduced as a passive stimulus aiming at the awakening effect, this is a determination for returning to the audio state before the passive stimulus is presented. If it is determined that the audio 701 is in an OFF state, the audio 701 is turned ON (step S803). If it is determined that the audio 701 is already in an ON state, a car audio use flag is set. (Step S804). Thereafter, a music piece having a predetermined tempo is selected (step S805), and the selected music piece 903 is reproduced as shown in FIG. 9B (step S806).

  Here, the predetermined tempo of the music is also the determination criterion of the previous step S801, but a rhythmical thing that makes you feel uplifted (excited) while listening to the music is selected and set in advance. . In addition, a plurality of music pieces that have a feeling of exhilaration may be set in advance according to the driver's preference, and may be selected from them.

  Next, it is determined whether or not the selected music is being reproduced (step S807). As a result of the determination, if it is determined that the reproduction of the selected music has been completed, it is then determined whether or not the audio use flag is set (step S810). If the audio use flag is not set, While the audio 701 is returned to the OFF state (step S811), when the audio use flag is set, the audio 701 is switched to the operation mode before the passive stimulus is presented (step S812), and the audio use flag is lowered (step S812). S813).

  On the other hand, during the reproduction of the music selected in the previous step S807, when the movement 1002 continues to be stepped on by the muscle 1001 shown in FIG. 10A and the stepping force is detected by the sensor 101, it is set in advance. It is determined whether or not the stepping force equal to or greater than a predetermined value has continued for a predetermined time set in advance (step S808). As a result of the determination, if the above requirement is satisfied, the playback volume 1003 of the audio 701 is increased as shown in FIG. 10B (step S809). Thus, also in the second embodiment, as in the first embodiment, controlling the intensity of the passive stimulus according to the stepping force and the stepping time is equivalent to the feedback amount (passive stimulus amount for human habitual movement). ), The driver's body movement can be induced in a more natural way.

  As described above, the same effects as those of the first embodiment can be obtained also in the second embodiment.

  FIG. 11 is a diagram illustrating the configuration of the snooze driving prevention apparatus according to the third embodiment of the present invention. The feature of the third embodiment is that, compared with the first embodiment, the passive stimulus presenting means is replaced with the automatic air conditioner system (air conditioner) 103, and the seat back 105 of the seat seat 105 is adapted to the waist of the driver. A seat vibration system (vibration device) 1101 that is arranged in a portion of the driver and applies a vibration stimulus to the driver's lower back, brings a driver's active stimulus and activates a passive stimulus presenting means. Is the stepping motion of the left leg, and the others are the same as in the first embodiment.

  Next, with reference to the flowchart shown in FIG. 12, the flow of the operation | movement of the induction | guidance | derivation of the predetermined body movement in the said structure and passive stimulus presentation is demonstrated. In FIG. 12, first, it is determined whether or not a stepping force equal to or greater than a predetermined value C is generated (step S1201). That is, when the driver feels tiredness of the waist and light sleepiness and desires a comfortable passive stimulus, the predetermined body movement required by the system is shown in FIG. 13 (a). It is determined whether or not a movement 1302 in which the footrest 104 is stepped on by applying force to the muscle 1301 of the head has been performed.

  If the above operation is performed as a result of the determination, the vibration device 1101 is operated to apply passive stimulation to the driver's waist (step S1202). At this time, as shown in FIG. 13A, the driver's waist is retracted and pressed against the seat back as shown by reference numeral 1303 by the stepping operation of the left leg, and the driver's waist is brought into close contact with the vibration device 1101. . Thereby, as shown in FIG.13 (b), the vibration stimulation (massage effect) 1305 to a waist | hip | lumbar part can be heightened. In addition, when the driver's driving posture is collapsed due to fatigue or sleepiness, a corrective effect on the correct driving posture can also be expected.

  Thereafter, it is determined whether or not the stepping force has decreased to a stepping force that is equal to or less than a predetermined value D set in advance (step S1203). If the result of the determination is that it has not decreased, the vibration device 1101 continues to operate. On the other hand, the driver is satisfied with the massage effect by vibration and weakens the stepping force on the left leg. The operation of the device 1101 is stopped, and the presentation of the passive stimulus to the driver is canceled (step S1204).

  As described above, the same effects as those of the first embodiment can be obtained also in the second embodiment.

  FIG. 14 is a diagram illustrating the configuration of the snooze driving prevention apparatus according to the fourth embodiment of the present invention. The feature of the fourth embodiment is that, compared to the first embodiment, in addition to the above-mentioned passive stimulus presenting means, the car audio system (audio) used in the second embodiment is added to the automatic air conditioner system (air conditioner) 103. 701, the seat vibration system (vibration device) 1101 used in Example 3 above, the scent generator 1401 that generates a scent prepared in advance and supplies the scent into the vehicle from the bench duct 1403, and blows out high-concentration oxygen to the blowing air In addition, a plurality of high-concentration oxygen-added air supply devices 1402 that are supplied into the vehicle from the bench duct 1403 are provided, and the passive stimulation is presented to the driver by switching or combining the plurality of passive stimulation presenting means, and active to the driver. Driver's predetermined body movement that activates the passive stimulus presentation means is a stepping movement of the left leg. Is intended, others are the same as in the first embodiment.

  Next, with reference to the flowchart shown in FIG. 15, the flow of the operation | movement of the passive stimulus presentation in the said structure is demonstrated. In FIG. 15, first, when the driver feels light sleepiness and desires some kind of passive stimulation to eliminate the sleepiness, it is determined whether or not the predetermined body movement required by the system has been performed. (Step S1501). In the fourth embodiment, the predetermined body movement is an operation of stepping on the footrest 104 continuously for a predetermined time or more with a predetermined stepping force equal to or greater than a predetermined value. As a result of the determination, if the stepping force of a predetermined value or more continues for a predetermined time or longer, the passive stimulus presenting means in the warm-up mode designated in advance is activated (step S1502).

  Here, the designated warm-up mode will be described in detail with reference to FIG. Mode 1 to Mode 10 are set as a combination of passive stimulus presenting means as shown in FIG. 16. Mode 1 is, for example, music 1, the air volume of air conditioner 103 is weak, the set temperature is high, and mode 2 is in addition to mode 1. It is set in advance as a high concentration oxygen and peppermint scent. It should be noted that the number of warm-up modes and how they are combined can be set freely according to the driver's preference, so that the system can be made more receptive to the driver.

  Returning to FIG. 15, every time the stepping motion is determined in the previous step S <b> 1501, the warm-up mode shown in FIG. 16 is incremented (step S <b> 1503), and the stimulus presentation content is changed. Thereafter, it is determined whether or not the set warm-up mode has been incremented to the end (step S1504). If it is determined that the set last mode is the last mode, the warm-up mode is returned to the first mode 1. (Step S1505).

  In addition, by adding a function for randomly selecting the warm-up mode to the control device 102, instead of executing the processing shown in steps S1503 to S1505 in FIG. 15, as shown in step S1701 in the flowchart in FIG. If the warm-up mode is selected at random, it is possible to expect an awakening effect in terms of the unexpectedness of stimulus presentation.

  Next, a modification of the fourth embodiment will be described with reference to FIGS. The feature of this modification is that several types of movements that provide active stimulation to the driver are set, and the passive stimulation presentation method is changed according to the movements. 18 and 19, in the lower part of the figure, the pedaling force due to the movement of the left leg requested to the driver as an active stimulus is shown on the vertical axis, and the elapsed time is shown on the horizontal axis. In addition, the operation state of the passive stimulation presented as a result of the exercise of the left leg is shown in the upper part of the figure.

  A specific flow of operation will be described with reference to FIGS. In FIG. 18, the rhythmic music 1801 is reproduced as a passive stimulus by allowing the driver to continue a rhythm movement of a predetermined tempo set in advance for a predetermined time Tr with a predetermined pedaling force P1 or more set in advance. Is done.

  Thereafter, when the driver continues the stepping operation for a predetermined time Ta (<Tr) with a predetermined pedaling force P2 (> P1), the air conditioner 103 is activated (reference numeral 1802 in FIG. 18), and cold air is sent out. At that time, if the driver desires a stronger cold air stimulus, the air flow of the air conditioner 103 can be further increased and set if the stepping motion is continued for a predetermined time Taf with the pedaling force exceeding the pedaling force P2 during the air conditioning operation. Lower the temperature further and present a stronger stimulus.

  On the other hand, in FIG. 19, when the driver continues stepping exercise for a predetermined time Ta or more with a predetermined pedaling force P2 or more, the air conditioner 103 is activated (reference numeral 1901 in FIG. 19), and cold air is sent out. At that time, if the driver desires vibration stimulation by the vibration device 1101 instead of stimulation by cold air, the driver depresses the pedal with a stronger pedaling force P3 (> P2) without temporarily reducing the pedaling force, and the pedaling force P3 is reduced. The vibration stimulus 1902 by the vibration device 1101 is presented at a predetermined time Tb that is maintained.

  After that, if the driver desires a passive stimulus by music, the rhythm movement at a preset tempo with a preset pedaling force P1 or more is continued for a preset predetermined time Tr. Rhythmical music 1903 is reproduced.

  Thus, in Example 4 and its modification, a plurality of passive stimulus presenting means are provided so that a plurality of different passive stimuli can be presented, so that the awakening effect can be given more comfortably. Further, by combining a body movement having an active stimulus effect and a plurality of passive stimulus presenting means, a more comfortable and high arousal effect can be obtained.

  FIG. 20 is a diagram illustrating the configuration of the snooze driving prevention apparatus according to the fifth embodiment of the present invention. The feature of the fifth embodiment is that, compared with the first embodiment, the driver's predetermined body movement that brings an active stimulus to the driver and activates the passive stimulus presenting means is compared with that of the left leg. Instead of the stepping motion, the both arms are pushed toward the handle 2002, and the rest is the same as in the first embodiment.

  In FIG. 20, in the fifth embodiment, instead of the sensor 101 shown in the first embodiment, a sensor 2001 that functions as a detection unit that detects the movement of both arms of the driver is provided on the backrest portion of the seat seat 105. The motion of both arms is detected by the sensor 2001, and the detection result is given to the control device 102. The control device 102 sets in advance that the motion of both arms detected by the sensor 2001 activates the passive stimulus presenting means. It is determined whether or not the push-in operation has been performed, and if it is determined that the operation has been set, the air conditioner 103 is activated.

  In such a configuration, as shown in FIG. 21A when the driver's seat is viewed from above, when the driver continuously performs the operation 2101 of pushing the handle 2002 with both arms, the reaction of the driver's body is caused by the reaction. This is pressed against the backrest portion of the seat 105, and is detected by the sensor 2001. As shown in FIG. 5B, cold air 2102 is sent from the air conditioner 103 to the driver.

  As described above, in the fifth embodiment, in addition to obtaining the same effect as in the first embodiment, it is possible to prevent active stimulation by requiring more various body movements. be able to.

  FIG. 22 is a diagram showing the configuration of the snooze driving prevention apparatus according to Embodiment 6 of the present invention. The feature of the sixth embodiment is that, compared with the fifth embodiment, the predetermined body movement of the driver that brings an active stimulus to the driver is replaced by pushing movement of both arms to the handle side. Thus, the headrest holding exercise of both arms is performed, and the others are the same as in the fifth embodiment.

  In FIG. 22, in the sixth embodiment, instead of the sensor 2001 shown in the fifth embodiment, a sensor 2201 that functions as a detection unit that detects the movement of both arms of the driver is provided in the headrest 2202. The movement of both arms is detected, and the detection result is given to the control device 102. The control device 102 holds a preset headrest in which the movement of both arms detected by the sensor 2201 activates the passive stimulus presenting means. It is determined whether the operation is an operation, and if it is determined that the operation is a set operation, the air conditioner 103 is activated.

  In such a configuration, as shown in FIG. 23A when the driver's seat is viewed from above, when the driver continuously performs the operation 2301 of holding the headrest 2202 with both arms, this operation is detected by the sensor 2201. As shown in FIG. 5B, cold air 2302 is sent from the air conditioner 103 to the driver.

As described above, the same effects as those of the fifth embodiment can be obtained in the sixth embodiment.

  Next, a seventh embodiment of the present invention will be described. The feature of the seventh embodiment is that in addition to the sensor for detecting the movement of the leg, the sensor for detecting the movement of the arm, and the plurality of passive stimulus presenting means described in the first to sixth embodiments. In addition, a means to detect the driving state of the vehicle and a passive stimulus suppression means were provided to prevent false presentation of passive stimuli in driving situations where it is estimated that the driver is not clearly seeking the arousal effect. It is in. Note that the driver's active stimulation when requesting passive stimulation and the method of presenting passive stimulation are the same as in any one of the first to sixth embodiments.

  FIG. 24 is a diagram illustrating the configuration of the snooze driving prevention apparatus according to the seventh embodiment. In FIG. 24, this apparatus includes means for detecting the movement of the driver's leg, means for detecting the movement of the arm, a plurality of passive stimulus presenting means, and vehicle running state detection for detecting the running state of the vehicle. And a result of determining whether or not the movement of the leg or arm detected by the detecting means for detecting the movement of the leg or arm is a predetermined movement, and a plurality of conditions based on the running state of the vehicle A control device 2406 for controlling the operation of the passive stimulus presenting means is provided.

  The leg motion detection sensor 2401 that functions as a means for detecting the movement of the driver's leg is composed of, for example, the sensor 101 described in the first embodiment, and is a means for detecting the movement of the arm of the driver. The functioning arm movement detection sensor 2402 is configured by the sensor 2001 described in the fifth embodiment, for example.

  The plurality of passive stimulus presenting means are the auto air conditioner system (air conditioner) 103, the car audio system 701, the seat vibration system (vibration device) 1101, the scent generating device 1401, and the high-concentration oxygen addition mentioned in the first to sixth embodiments. The air supply device 1402 is configured.

  The vehicle running state detection means includes a vehicle speed sensor 2403 that detects the vehicle speed, a steering angle sensor 2404 that detects the steering angle, and a navigation system 2405 that provides route guidance and the like with map information, and the detection results detected thereby. Is provided to the controller 2406.

  In addition to the functions of the control device 102 described in the first to sixth embodiments, the control device 2406 stops the vehicle such as parking or waiting for a signal based on the detection result detected by the vehicle running state detection means. Operation of a plurality of passive stimulus presenting means based on the detection results determined by the detection results detected by the sensors 2401 and 4022 To control.

  Next, with reference to the flowchart shown in FIG. 25, the operation | movement of suppression of the passive stimulation presentation in the said structure and the suppression cancellation | release is demonstrated. In FIG. 25, first, it is determined whether or not the vehicle is stopped using the vehicle speed sensor 2403 and the navigation system 2405 (step S2501). As a result of the determination, if it is determined that the vehicle is not in a stopped state, even if the arm movement detection sensor 2402 detects the movement of the arm, the passive stimulation is suppressed (step S2504). This is because both the arms need to hold the handle with both hands so that any change can be always dealt with while the vehicle is running, and therefore, it is possible to suppress the movement of both arms.

  Subsequently, it is determined whether or not the vehicle is traveling on a congested road based on the detection result of the vehicle travel state detecting means (step S2505), and when it is determined that the vehicle is not traveling on the congested road as a result of the determination. Then, it is determined whether or not the vehicle is traveling monotonously on the highway at a substantially constant speed within the speed limit (step S2506). As a result of the determination, if it is determined that the vehicle is not traveling monotonously on the highway, even if the leg motion detection sensor 2402 detects the motion of the leg, the presentation of passive stimulation is also suppressed. (Step S2507). This is because, in runnings other than monotonous running, the legs must be kept in an operable state so that they can always cope with any changes, so that the movement by the legs is prevented from being induced. .

  On the other hand, if it is determined in the previous step S2501 that the vehicle has been stopped for a relatively long period of time, such as parking or waiting for a signal, the suppression of the presentation of passive stimulation by the detection of both arm and leg movements is canceled. If it is determined in the previous steps S2505 and S2506 that the vehicle is running in a traffic jam or is running at a monotonous high speed, the suppression of the presentation of the passive stimulus by detecting the movement of the leg is canceled (step S2502, S2503). Step S2503).

  As described above, in this seventh embodiment, in addition to the effects obtained in any of the first to sixth embodiments, the driver will obtain an awakening effect based on the running state of the vehicle. Thus, it is possible to estimate the situation and to present the stimulus only in that situation, and to present the stimulus accurately to the driver.

  In Examples 1 to 7 described above, the awakening effect is obtained by the predetermined body movement. With reference to FIGS. 26 and 27 showing the experimental data, the predetermined body movement and the awakening degree maintaining effect Will be described.

  FIG. 26 and FIG. 27 show a change in the arousal level during a task that causes the subject to perform a task that tends to cause a decrease in the arousal level, despite the need for concentration in the bench experiment. The arousal level was used as an evaluation criterion by using a change in the closed eye rate that was confirmed to have a high correlation (which increased as the arousal level decreased).

  26 and FIG. 27, when the task performance falls at the elapsed time indicated by the ▲ mark on the horizontal axis, FIG. 26 shows the predetermined body movement with the left foot on the footrest of the vehicle at about 10 kgf for about 1 second. FIG. 27 shows a change in the closed eye rate when a movement simulating a simple switch operation such as turning on the air conditioner of the vehicle is performed under the same conditions.

  In such experimental results, it can be seen that if the subject can be requested and guided for a predetermined movement, there is a great arousal effect. This experimental example shows an example where the arousal effect is large as an active stimulus by body movement. Although this experiment data is different, it is performed in the same subject and the same time zone, and the effect is compared. is there.

It is a figure which shows the structure of the snooze driving | running | working prevention apparatus which concerns on Example 1 of this invention. It is a figure which shows the structure of the snooze driving | running | working prevention apparatus which concerns on Example 1 of this invention. It is a figure which shows the structure of the snooze driving | running | working prevention apparatus which concerns on Example 1 of this invention. It is a flowchart which shows the process sequence of the operation | movement which concerns on Example 1 of this invention. It is a figure which shows the mode of the effect | action which concerns on Example 1 of this invention. It is a figure which shows the mode of the other effect | action which concerns on Example 1 of this invention. It is a figure which shows the structure of the dozing driving prevention apparatus which concerns on Example 2 of this invention. It is a flowchart which shows the process sequence of the operation | movement which concerns on Example 2 of this invention. It is a figure which shows the mode of the effect | action which concerns on Example 2 of this invention. It is a figure which shows the mode of the other effect | action which concerns on Example 2 of this invention. It is a figure which shows the structure of the dozing driving prevention apparatus which concerns on Example 3 of this invention. It is a flowchart which shows the process sequence of the operation | movement which concerns on Example 3 of this invention. It is a figure which shows the mode of the effect | action which concerns on Example 3 of this invention. It is a figure which shows the structure of the dozing driving prevention apparatus which concerns on Example 4 of this invention. It is a flowchart which shows the process sequence of the operation | movement which concerns on Example 4 of this invention. It is a figure which shows the example of a combination of the warm-up mode which concerns on Example 4 of this invention. It is a flowchart which shows the process sequence of the other operation | movement which concerns on Example 4 of this invention. It is a figure which shows the relationship between the active stimulus which concerns on the modification of Example 4 of this invention, and a passive stimulus. It is a figure which shows the other relationship of the active stimulus which concerns on the modification of Example 4 of this invention, and a passive stimulus. It is a figure which shows the structure of the dozing driving prevention apparatus which concerns on Example 5 of this invention. It is a figure which shows the mode of the effect | action which concerns on Example 5 of this invention. It is a figure which shows the structure of the dozing driving prevention apparatus which concerns on Example 6 of this invention. It is a figure which shows the mode of the effect | action which concerns on Example 6 of this invention. It is a figure which shows the structure of the dozing driving prevention apparatus which concerns on Example 7 of this invention. It is a flowchart which shows the process sequence of the operation | movement which concerns on Example 7 of this invention. It is a figure which shows the experimental result of the relationship between the predetermined | prescribed body movement of the driver | operator which concerns on this invention, and a wakefulness change. It is a figure which shows the experimental result of the relationship between the predetermined | prescribed body movement of the driver | operator which concerns on this invention, and a wakefulness change.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101, 2001, 201 ... Sensor 102, 2406 ... Control apparatus 103 ... Auto air-conditioning system 104 ... Footrest 105 ... Seat seat 701 ... Car audio system 1101 ... Vibration apparatus 1401 ... Scent generator 1402 ... High concentration oxygen addition air supply apparatus 1403 ... Bench duct 2002 ... Handle 2202 ... Headrest 2401 ... Leg motion detection sensor 2402 ... Arm motion detection sensor 2403 ... Vehicle speed sensor 2404 ... Steering angle sensor 2405 ... Navigation system

Claims (10)

A passive stimulus presentation means for presenting a passive stimulus to the driver;
Detecting means for detecting a driver's motion including a driver's predetermined body motion that provides an active stimulus to the driver and activates the passive stimulus presenting means;
It is determined whether or not the driver's action detected by the detection means is an act of actuating the passive stimulus presenting means, and if the result of the judgment is an act of actuating, the passive stimulus presenting means is actuated. A snooze driving prevention apparatus comprising: a control means for presenting a passive stimulus to a driver and bringing an active stimulus to awaken the driver. Vehicle driving state detection means for detecting the driving state of the vehicle driven by the driver,
2. The dozing operation according to claim 1, wherein the control unit suppresses the presentation of the passive stimulus by the passive stimulus presenting unit based on the running state of the vehicle detected by the vehicle running state detecting unit. Prevention device. 2. The predetermined body motion of the driver that causes the driver to actively stimulate and activates the passive stimulus presenting means is a predetermined stepping operation of the driver's leg. Or the snooze driving prevention device according to 2; 2. The predetermined body motion of the driver that brings an active stimulus to the driver and activates the passive stimulus presenting means is a predetermined motion of the arm of the driver. 2. The snooze driving prevention device according to 2. The said control means determines an act of action based on at least 1 or more of the time of the operation | movement of a driver | operator's leg part or arm part, the frequency | count, and an operating force. The snooze driving prevention device according to item. The control means determines an act of action based on at least one of the time, number of times, and act force of the movement of the driver's leg or arm, and changes the presentation content of the passive stimulus according to the act of action. The doze driving prevention device according to any one of claims 1 to 4. The drowsiness prevention device according to claim 3, wherein the detection means is installed on a footrest surface on which a driver's legs are placed. 5. The snooze driving prevention apparatus according to claim 3, wherein the detection unit is installed in a seat seat on which a driver is seated. 5. The snooze driving prevention apparatus according to claim 4, wherein the detection means is installed on a headrest that indicates a driver's head. The passive stimulus presenting means includes at least one of an automatic air conditioner system, a scent generating device, a car audio system, a high-concentration oxygenated air supply device, and a vibration device incorporated in a driver's seat. The doze driving prevention device according to any one of claims 1 to 9.

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