JP5736977B2 - Staggered driving notification device - Google Patents

Description

  The present invention relates to a technique for notifying a driver who is driving a vehicle in a wobble manner according to the factor of the wobbling operation.

  There is a technique described in Patent Document 1 as a technique for detecting a driver's side-viewing state or dozing state of a driver who is driving a moving body such as a vehicle and performing an alarm based on the detected result. In the prior art of this patent document 1, the driver's side-view driving or dozing operation state is determined from the driver's face image captured by the camera, and a notification signal is output to notify the driver based on the determination result. .

Japanese Patent Laid-Open No. 2005-18656

However, in the above prior art, in order to determine the state of aside driving or snoozing driving, it is necessary to perform imaging of an area including the driver's face by a dedicated camera and image processing and analysis processing of the captured image, which increases costs. In addition, there are problems such as an increase in calculation load.
The present invention pays attention to the above points, and an object of the present invention is to estimate a factor of a wobbling running state of a vehicle at a low cost and a low load.

In order to solve the above-described problem, the present invention detects an unstable driving state of a vehicle based on information related to the traveling state of the vehicle, and an environment uncomfortable for a driver in the vehicle interior based on information related to the environment in the vehicle interior. When it is determined that the state has been detected, the cause of the wobbling driving state is estimated to be due to the driver's side- by- side state , and the driver is notified according to the estimation result.

According to the present invention, when it is determined that the vehicle is in a wobbling driving state and the interior of the vehicle is in an unpleasant environment state for the driver, it is estimated that the cause of the wobbling driving state is due to the driver's looking-aside state. It is possible to estimate the cause of the wobbling running state with a simple configuration without using a relatively high-cost device such as, and without performing a relatively high load process such as image processing of a captured image.

1 is a schematic configuration diagram of a vehicle equipped with a wobbling driving notification device according to a first embodiment of the present invention. It is a block diagram which shows an example of a function structure of the wobbling driving | operation notification controller which concerns on 1st Embodiment of this invention. It is a flowchart which shows an example of the process sequence of the wobbling driving | operation alerting | reporting process which concerns on 1st Embodiment of this invention. It is a figure which shows an example of the relationship between vehicle interior temperature and the thermal sensation of a driver. It is a schematic block diagram of the vehicle carrying the wobbling driving | operation alerting device which concerns on 2nd Embodiment of this invention. It is a block diagram which shows an example of a function structure of the wobbling driving | operation notification controller which concerns on 2nd Embodiment of this invention. It is a flowchart which shows an example of the process sequence of the wobbling driving | operation alerting | reporting process which concerns on 2nd Embodiment of this invention.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. 1-4 is a figure which shows 1st Embodiment of the wobbling driving | operation alerting | reporting apparatus which concerns on this invention.
(Constitution)
First, the configuration of the wobbling operation notification device will be described.
FIG. 1 is a schematic configuration diagram of a vehicle equipped with the wobbling driving notification device according to the present embodiment.
As shown in FIG. 1, the vehicle 1 equipped with the staggered driving notification device includes an ECU 2, a steering angle sensor 3, a vehicle interior temperature sensor 4, a display 5, an audio device 6, a speaker 7, and a memory 8. Timer 9.

In the present embodiment, the ECU (Electronic Control Unit) 2 includes a wobbling operation notification controller 200 for realizing the wobbling operation notification function of the wobbling operation notification device.
The steering angle sensor 3 detects a steering angle of a steering device (not shown) which is a vehicle steering device, and transmits a steering angle signal indicating information of the detected steering angle to the staggered driving notification controller 200.
If the vehicle includes a steering torque sensor, the steering angle may be obtained by converting the steering torque from the steering torque sensor.

The vehicle interior temperature sensor 4 detects the temperature in the vehicle interior and transmits information on the detected temperature to the wobbling operation notification controller 200.
The display 5 is used to display a notification message or the like when the wobbling driving notification controller 200 performs notification according to the estimation result of the wobbling driving state factor to the driver. The display 5 may be used in combination with a meter display or a navigation system display.

The audio device 6 includes an amplifier, and outputs an audio signal such as a voice message or music to the speaker 7 in response to a command from the wobbling operation notification controller 200.
The audio device 6 may be used in combination with an audio device mounted on a vehicle or an audio device provided in a car navigation system.
In response to the supply of the acoustic signal from the audio device 6, the speaker 7 converts the acoustic signal into physical vibration and generates sound.

In addition, the speaker 7 is good also as a structure using the speaker installed in the vehicle interior.
The memory 8 stores a dedicated program for realizing the wobbling operation notification function and various data necessary for executing the program. The memory 8 outputs various data to the wobbling operation notification controller 200 in response to a request from the wobbling operation notification controller 200.
The timer 9 is used when the wobbling driving notification controller 200 realizes the wobbling driving notification function, and measures the duration time of a predetermined environmental state in the passenger compartment. The timer 9 transmits the measurement result to the wobbling operation notification controller 200.

  The wobbling driving notification controller 200 is based on the steering angle time change pattern indicated by the steering angle signal transmitted from the steering angle sensor 3 to determine whether or not the vehicle is in a wobbling state (hereinafter referred to as a wobbling driving state). Determine whether. Further, the wobbling operation notification controller 200 determines whether or not the environmental state of the vehicle interior is uncomfortable for the driver based on the vehicle interior temperature information transmitted from the vehicle interior temperature sensor 4. Then, when the wobbling driving notification controller 200 determines that it is the wobbling running state, the wobbling driving informing controller 200 estimates a factor caused by the carelessness of the driver in the wobbling driving state based on the environmental state of the vehicle interior. Based on this estimation result, the wobbling driving notification controller 200 performs notification according to the estimation result to the driver via the audio device 6 and the speaker 7.

Next, the functional configuration of the wobbling operation notification function realized by executing the dedicated program in the wobbling operation notification controller 200 will be described.
FIG. 2 is a block diagram illustrating an example of a functional configuration of the wobbling operation notification controller 200.
As shown in FIG. 2, the wobbling operation notification controller 200 includes a wobbling operation detection unit 21, an unpleasant state detection unit 22, a factor estimation unit 23, and a notification unit 24.
The wobbling driving detection unit 21 acquires the steering angle signal transmitted from the steering angle sensor 3, and based on the time change pattern of the steering angle indicated by the acquired steering angle signal, whether the driving state of the vehicle is the wobbling driving state. Is detected.

Specifically, the wobbling operation detection unit 21 calculates the difference between the time change pattern of the steering angle when the driver is operating normally and the time change pattern of the acquired steering angle. When the wobbling driving detection unit 21 determines that the difference between the calculated values is equal to or greater than a preset threshold, the wobbling driving detection unit 21 detects that the traveling state of the host vehicle is the wobbling traveling state. The steering angle time change pattern during normal driving is stored in the memory 8 in advance.
The wobbling operation detection unit 21 outputs the detection result of the wobbling running state to the unpleasant state detection unit 22.
When the unpleasant state detection unit 22 acquires the detection result indicating the wobbling driving state from the wobbling driving detection unit 21, the environmental state in the vehicle interior is determined by the driver based on the temperature information in the vehicle interior transmitted from the vehicle interior temperature sensor 4. It detects whether it is in an unpleasant state.

  Specifically, the unpleasant state detection unit 22 determines whether or not the temperature indicated by the acquired temperature information is outside the temperature range where the driver feels comfortable based on the information indicating the temperature range where the driver feels comfortable. And if it is in a temperature range, it will detect as a comfortable state, and if it is outside a temperature range, it will detect as an uncomfortable state. Note that information indicating a temperature range in which the driver feels comfortable (information indicating the comfortable temperature range) is stored in the memory 8 in advance. The unpleasant state detection unit 22 reads the information indicating the comfortable temperature range from the memory 8 and sets the read information indicating the comfortable temperature range as a determination value before executing the determination process.

The unpleasant state detection unit 22 outputs the detection result of the comfortable state or the unpleasant state to the factor estimation unit 23.
The factor estimating unit 23 estimates the cause of the wobbling running state based on the detection result from the unpleasant state detecting unit 22 and the measurement time of the timer 9.
Specifically, when the factor estimation unit 23 obtains a detection result indicating an unpleasant state from the unpleasant state detection unit 22, the factor estimation unit 23 estimates that the cause of the wobbling running state is in the driver's side looking state (side looking driving).

  On the other hand, the factor estimating unit 23 gives a time measurement start command to the timer 9 using the timing at the start of operation as a trigger, and starts measuring the elapsed time (operation time) from the start of operation. And the factor estimation part 23 determines whether the elapsed time after a driving | operation start became more than the preset elapsed time threshold value, when the detection result which is a comfortable state is acquired from the unpleasant state detection part 22. FIG. The elapsed time threshold value is stored in the memory 8. The factor estimating unit 23 reads an elapsed time threshold value from the memory 8 and executes the read elapsed time threshold value as a determination value before executing the determination process.

If the factor estimating unit 23 determines that the elapsed time threshold is exceeded, the factor estimating unit 23 estimates that the wobbling driving state is in a state in which the driver is drowsy (including a snoozing state). The factor estimating unit 23 determines that the factor of the wobbling traveling state cannot be estimated when it is determined that the elapsed time from the start of driving is less than a preset elapsed time threshold.
In addition, instead of the elapsed time from the start of driving, the elapsed time after detecting that the environmental state of the passenger compartment becomes the comfortable state is measured by the timer 9, and the measured elapsed time of the comfortable state may be used. Good.

  In this case, the factor estimating unit 23 determines whether or not the elapsed time of the comfortable state is equal to or greater than a preset elapsed time threshold in response to acquiring the detection result of the comfortable state from the unpleasant state detecting unit 22. To do. If the factor estimating unit 23 determines that the elapsed time threshold or more is reached, the factor estimating unit 23 estimates that the factor of the wobbling driving state is in a driver's sleepy state. The factor estimating unit 23 determines that the factor of the wobbling running state cannot be estimated when it is determined that the elapsed time of the comfortable state is less than a preset elapsed time threshold.

The factor estimation unit 23 outputs the estimation result of the factor of the wobbling running state or the determination result that the estimation is impossible to the notification unit 24.
The notification unit 24 performs notification according to the estimation result or the determination result to the driver via the display 5, the audio device 6, and the speaker 7 based on the estimation result or the determination result of the factor estimation unit 23.

(Fluctuation driving notification process)
Next, the procedure of the wobbling operation notification process performed by the wobbling operation notification controller 200 will be described.
FIG. 3 is a flowchart illustrating an example of a processing procedure of the wobbling operation notification process of the present embodiment.
When the power is turned on (ignition is turned on) and the dedicated program is executed in the wobbling operation notification controller 200, the process first proceeds to step S100 as shown in FIG.

In step S100, processing for initializing timers, counters, and flags used in the subsequent processing is executed, and the process proceeds to step S102.
In step S102, the wobbling driving detection unit 21 acquires the steering angle signal transmitted from the steering angle sensor 3, stores the steering angle information indicated by the acquired steering angle signal in a memory such as a RAM, and proceeds to step S104. To do.
In step S104, the wobbling driving detection unit 21 performs the wobbling driving state based on the time variation of the steering angle indicated by the steering angle information stored in the memory and the time variation of the steering angle during normal operation stored in the memory 8. Is detected, and the process proceeds to step S106.

In step S106, the unpleasant state detection unit 22 determines whether or not a wobbling running state is detected based on the result of the detection process in step S104. If it is determined that the wobbling running state has been detected (Yes), the process proceeds to step S108, and if not (No), the process proceeds to step S124.
When the process proceeds to step S108, the uncomfortable state detection unit 22 acquires the temperature information in the vehicle interior transmitted from the vehicle interior temperature sensor 4, and the process proceeds to step S110.

  In step S110, the uncomfortable state detection unit 22 reads information indicating the comfortable temperature range from the memory 8, and based on the read information and the temperature information acquired in step S108, the temperature state in the vehicle compartment is outside the appropriate temperature range for the driver. It is determined whether or not. If it is determined that the temperature is outside the appropriate temperature range (Yes), it is detected that the state is uncomfortable, the detection result is output to the factor estimating unit 23, and the process proceeds to step S112. On the other hand, if it is determined that the temperature is not outside the appropriate temperature range (No), it is detected as being in a comfortable state, the detection result is output to the factor estimating unit 23, and the process proceeds to step S118.

When the process proceeds to step S <b> 112, the factor estimating unit 23 estimates that the cause of the wobbling driving state is in the driver's aside state based on the detection result of the uncomfortable state, and outputs the estimation result to the notification unit 24. The process proceeds to step S114.
That is, when the environmental condition in the passenger compartment is uncomfortable for the driver, the driver is less likely to be drowsy, so it is estimated that this is a factor other than drowsiness. In this embodiment, in such a situation, it is presumed that the cause of the wobbling running state is the driver's looking aside.

In step S114, based on the estimation result that the driver's looking-aside state is a factor in the notification unit 24, a warning for noting the looking-aside state is executed, and the process proceeds to step S124.
On the other hand, in step S110, when it is detected that the user is in the comfortable state and the process proceeds to step S116, the factor estimation unit 23 acquires the measurement time transmitted from the timer 9. Next, the factor estimating unit 23 determines whether or not the acquired measurement time is equal to or greater than a preset elapsed time threshold. If it is determined that the measured time of the timer 9 is equal to or greater than the elapsed time threshold (Yes), the process proceeds to step S118, and if it is not (No), the process proceeds to step S122.

  In the present embodiment, the factor estimating unit 23 gives a command to start time measurement to the timer 9 at the start of operation. Thereby, the time measurement of driving time is started. The factor estimating unit 23 acquires the measurement time from the timer 9, and estimates the factor by comparing the acquired measurement time with a preset elapsed time threshold value.

  On the other hand, the elapsed time of the comfort state can be used instead of the driving time. In this case, the unpleasant state detection unit 22 performs temperature information acquisition and a determination process as to whether or not the uncomfortable state occurs at a preset sampling cycle regardless of the occurrence of the wobbling running state. When the unpleasant state detection unit 22 detects the unpleasant state or determines that the comfortable state is newly established from the initial state (start of driving), the unpleasant state detection unit 22 gives a command to start the time measurement to the timer 9. Thereby, the time measurement of a comfortable state (suitable temperature state) is started. In addition, when the environmental state of the passenger compartment shifts to an uncomfortable state during measurement by the timer 9, the unpleasant state detection unit 22 stops the measurement for the timer 9 and clears (initializes) the timer. Give a directive. As a result, the timer 9 stops the time measurement and clears the measurement time to an initial value (for example, 0).

When the process proceeds to step S118, the factor estimation unit 23 estimates that the cause of the wobbling running state is the driver's sleepiness, outputs the estimation result to the notification unit 24, and proceeds to step S120. .
That is, it is highly possible that the wobbling running state that occurs after the elapse of time equal to or greater than the elapsed time threshold from the start of driving is caused by driving in a state in which the driver is drowsy (including a sleep state). Therefore, in this case, the factor estimating unit 23 estimates that the factor of the wobbling running state is due to the driver's sleepiness.

Similarly, when the elapsed time of the comfortable state is used, the occurrence of the wobbling driving state that occurs after the elapsed time threshold or more after the passenger compartment becomes a comfortable temperature state has become drowsy for the driver. It is highly likely that it is caused by driving in a state. Therefore, in this case, the factor estimating unit 23 estimates that the factor of the wobbling running state is due to the driver's sleepiness.
In step S120, informing part 24 performs information which promotes a break to a driver, and shifts to step S124.

In Step S116, when it is determined that the elapsed time of the comfortable state is less than the elapsed time threshold value and the process proceeds to Step S122, the notification unit 24 notifies the driver of the fact that the driver is in the wobbling running state. To do. Thereafter, the process proceeds to step S124.
When the process proceeds to step S124, the wobbling operation notification controller 200 determines whether or not the power is turned off. If it is determined that the power has been turned off (Yes), the series of processing ends, and if it is not determined (No), the process proceeds to step S102.

(Operation)
Next, the operation of the vehicle 1 equipped with the wobbling driving notification device of this embodiment will be described.
FIG. 4 is a diagram illustrating an example of the relationship between the passenger compartment temperature and the driver's thermal sensation.
When the ignition switch is turned on and the power is turned on, a dedicated program is executed in the wobbling operation notification controller 200. Thereby, initialization processing is executed, and in addition to initialization of the timer and counter, various variables and flags used in the program are initialized (S100). After the initialization process, various information acquired by the steering angle sensor 3 and the vehicle interior temperature sensor 4, the measurement time of the timer 9, and the like are input to the wobbling operation notification controller 200.

First, the wobbling driving notification controller 200 acquires the steering angle signal transmitted from the steering angle sensor 3 in the wobbling driving detection unit 21, and stores the steering angle information indicated by the acquired steering angle signal in a memory such as a RAM ( S102).
Further, when the ignition switch is turned on and the engine is started, the factor estimating unit 23 gives a time measurement start command to the timer 9 in order to measure the operation time.
Since the determination result becomes inaccurate until the steering angle information for a preset time (predetermined number) is stored, the wobbling driving detection unit 21 detects that the wobbling driving state is not in this period. Then, the wobbling operation detection unit 21 outputs the detection result to the unpleasant state detection unit 22 (No in S104 and S106).

On the other hand, after the initialization process, the uncomfortable state detection unit 22 has a comfortable environmental condition for the driver based on temperature information transmitted from the vehicle interior temperature sensor 4 and information indicating a preset comfortable temperature range. It is determined whether or not it is in a state.
Here, as information on the comfortable temperature range, for example, as shown in FIG. 4, the comfortable temperature range information is set based on the relationship between the vehicle interior temperature and the driver's thermal sensation. That is, since the driver feels comfortably in the range of temperatures TL to TH in FIG. 4, the temperature range of TL (for example, 10 ° C.) to TH (for example, 40 ° C.) is set as the comfortable temperature range.

  Since the comfort of the room temperature varies depending on the difference from the outside air temperature, for example, if the outside air temperature is 35 ° C. in summer, the comfortable temperature range is 20 to 30 ° C. Further, if the outside air temperature is 10 ° C. in winter, for example, the comfortable temperature range is 18 ° C. to 22 ° C. Thus, the comfortable temperature range may be set so that the difference from the outside air temperature is about ± 10 ° C. In this case, an outside air temperature sensor that detects the outside air temperature is installed in the host vehicle. In addition, a table in which each comfortable temperature range corresponding to the outside air temperature is registered is stored in the memory 8. The unpleasant state detection unit 22 appropriately changes the set value of the comfortable temperature range based on the detected temperature of the outside air temperature sensor and the information registered in the table.

  Note that the discomfort state detection unit 22 uses the elapsed time of the comfort state for the factor estimation instead of the driving time, and when it is determined that the state is the comfort state by this determination process, the timer 9 measures the time. Give the command to start. This determination process is repeated at a preset sampling cycle.

  Further, when the steering angle information for a preset time is stored in the memory, the wobbling operation detection unit 21 stores the time change pattern of the stored steering angle and the steering during normal operation stored in the memory 8. The time change pattern of the corner is compared (S104). Specifically, the sum of absolute values of the difference between the steering angles corresponding to the two is calculated, and it is determined whether or not the host vehicle is in a wobbling running state based on whether or not the sum of the absolute values is equal to or greater than a preset threshold value. (S106). In the present embodiment, when it is determined that it is equal to or greater than the threshold value, it is determined that the vehicle is in the wobbling running state, and when it is determined that it is less than the threshold value, it is determined that the vehicle is not in the wobbling driving state.

Here, it is assumed that it is determined that the host vehicle is in a wobbling running state (Yes in S106). The wobbling operation detection unit 21 outputs the determination result to the unpleasant state detection unit 22.
The unpleasant state detection unit 22 acquires temperature information transmitted from the vehicle interior temperature sensor 4 when acquiring the determination result indicating the wobbling running state (S108). The unpleasant state detection unit 22 determines whether or not the vehicle interior temperature is outside the comfortable temperature range based on the acquired temperature information and information on the comfortable temperature range (S110).

Here, it is assumed that the temperature is outside the comfortable temperature range (Yes in S110). Thereby, the unpleasant state detection unit 22 outputs a determination result that the environmental state of the vehicle interior is unpleasant for the driver to the factor estimating unit 23.
When the factor estimation unit 23 obtains a determination result indicating that the vehicle is in an uncomfortable state from the uncomfortable state detection unit 22, the factor estimating unit 23 estimates that the factor of the wobbling driving state is in the driver's aside state. The factor estimation unit 23 outputs the estimation result to the notification unit 24 (S112).

When the notification unit 24 obtains an estimation result that the looking-aside state is a factor from the factor estimating unit 23, the notifying unit 24 transmits an image display signal for displaying a message image that warns about the looking-aside state to the display 5. The alerting | reporting part 24 outputs the audio | voice information which outputs the audio | voice message which alerts a state of looking aside with respect to the audio equipment 6 with transmission of an image display signal.
On the other hand, when acquiring the audio information, the audio device 6 generates an audio signal of an audio message corresponding to the audio information, and outputs the generated audio signal to the speaker 7.

As a result, a message image that warns about the side-by-side state such as “Attention to look aside” (for example, blinking in red) is displayed on the display 5. At the same time, the speaker 7 outputs a voice message for directing attention from the side-viewing state such as “Caution ahead!” Or “Please stop driving aside” (S114).
Further, it is assumed that the uncomfortable state detection unit 22 determines that the temperature is within the comfortable temperature range (No in S110), and the determination result that the environmental state of the vehicle interior is a comfortable state for the driver is output to the factor estimation unit 23. .

When the factor estimation unit 23 acquires the determination result that the user is in the comfortable state from the unpleasant state detection unit 22, the factor estimation unit 23 compares the measurement time transmitted from the timer 9 with a preset elapsed time threshold value. Based on the comparison result, the factor estimating unit 23 determines whether or not the operation time (measurement time) is equal to or greater than an elapsed time threshold (for example, 2 hours) (S116).
In addition, when the factor estimation unit 23 uses the elapsed time of the comfortable state instead of the driving time, has the elapsed time (measurement time) after becoming the comfortable state become equal to or greater than the elapsed time threshold (for example, 2 hours)? It is determined whether or not (S116).

Here, it is assumed that it is determined that the elapsed time threshold is exceeded (Yes in S116). From this determination result, the factor estimating unit 23 estimates that the cause of the wobbling driving state is in a state in which the driver is drowsy (including a dozing state). The factor estimation unit 23 outputs the estimation result to the notification unit 24 (S118).
When the notification unit 24 obtains an estimation result that the sleepy state is a factor from the factor estimation unit 23, the notification unit 24 transmits an image display signal for displaying a message image for promoting a break to the display 5. The alerting | reporting part 24 outputs the audio | voice information which outputs the audio | voice message which promotes a break with respect to the audio equipment 6 with transmission of an image display signal.

On the other hand, when acquiring the audio information, the audio device 6 generates an audio signal of an audio message corresponding to the audio information, and outputs the generated audio signal to the speaker 7.
As a result, a message image for promoting a break such as “Please take a break in the next ○ × parking area” is displayed on the display 5. At the same time, the speaker 7 wakes up the driver and promotes a break, such as “Wake up! Seems you feel sleepy, so take a break in the parking area. A message is output (S120).

On the other hand, it is assumed that the measurement time (elapsed time) of the timer 9 is determined to be less than the elapsed time threshold (No in S116). The factor estimating unit 23 determines from the determination result that the factor of the wobbling running state cannot be estimated. The factor estimating unit 23 outputs the determination result to the notification unit 24.
When the notification unit 24 acquires a determination result in a state that cannot be estimated from the factor estimation unit 23, the notification unit 24 displays an image display that displays a message image that informs the driver of the fact that the wobbling running state has occurred on the display 5. Send a signal. In addition to the transmission of the image display signal, the notification unit 24 outputs to the audio device 6 voice information that outputs a voice message that informs the fact that the wobbling running state has occurred.

On the other hand, when acquiring the audio information, the audio device 6 generates an audio signal of an audio message corresponding to the audio information, and outputs the generated audio signal to the speaker 7.
As a result, a message image indicating the fact that the host vehicle is in a wobbling running state, such as “Fluctuation driving has occurred! (For example, blinking in red)”, is displayed on the display 5. At the same time, the speaker 7 outputs a voice message informing the driver of the fact that the wobbling running state has occurred, such as “A wobbling running state has occurred” (S122).
Here, in the above description, the wobbling operation detection unit 21 constitutes a wobbling operation detection unit. The unpleasant state detection part 22 comprises an unpleasant state detection means. The factor estimating unit 23 constitutes factor estimating means. The notification unit 24 constitutes a notification unit.

(Effect of this embodiment)
This embodiment has the following effects.
(1) The wobbling driving detection unit 21 detects the wobbling driving state of the vehicle based on information related to the driving state of the vehicle. The unpleasant state detection unit 22 detects an unpleasant environmental state for the driver in the vehicle interior based on information related to the environment in the vehicle interior. The factor estimating unit 23 estimates whether or not the factor of the wobbling driving state of the vehicle is due to driver drowsiness or other than drowsiness based on the detection results of the wobbling driving detection unit 21 and the unpleasant state detection unit 22. The notification unit 24 notifies the driver based on the estimation result based on the estimation result of the factor estimation unit 23. Further, if the factor estimating unit 23 determines that the wobbling driving state is detected and determines that the uncomfortable environmental state is detected, the factor estimating unit 23 estimates that the factor of the wobbling driving state is due to something other than sleepiness.

  If it is detected that the environmental condition in the passenger compartment is uncomfortable for the driver after detecting the wobbling driving state of the vehicle, for example, it is highly likely that the driver will not be drowsy in the uncomfortable state. Presume that there is. On the other hand, if it is detected that the environmental state in the passenger compartment is comfortable for the driver, for example, it is estimated that sleepiness is a factor because the driver is likely to be sleepy in the comfortable state. As described above, it is possible to estimate the cause of the wobbling running state based on information (for example, temperature information, humidity information, etc.) relating to the environment in the passenger compartment. As a result, it is possible to estimate the cause of the wobbling running state at low cost and low load.

(2) Factors other than drowsiness include a driver's aside state.
The occurrence of staggered driving conditions can be broadly attributed to the driver's drowsiness (sleeping state, etc.) and the driver's side-by-side condition. Was estimated as a factor.
As a result, it is possible to estimate the cause of the wobbling running state at low cost and low load.

(3) The wobbling driving detection unit 21 detects the wobbling running state of the vehicle based on the change in the steering angle.
The steering angle can be acquired directly from the steering angle sensor or can be acquired by converting the steering torque of the steering torque sensor. These sensors are often cheaper than image sensors such as cameras and are often provided as standard equipment. Therefore, by detecting the wobbling running state based on the change in the steering angle, it is possible to detect the wobbling running state at a low cost. Therefore, it is possible to estimate the cause of the wobbling running state at a lower cost.

(4) If the uncomfortable state detection unit 22 determines that the vehicle interior temperature is outside the preset comfortable temperature range, it detects that the vehicle interior is uncomfortable for the driver.
This makes it possible to detect an uncomfortable environmental state in the vehicle interior by low-load processing such as temperature comparison processing based on information that can be acquired at low cost, such as temperature information in the vehicle interior.

(5) The factor estimation unit 23 determines that the vehicle interior is not in an uncomfortable environmental state based on the detection result of the unpleasant state detection unit 22, and the elapsed time from the preset start timing is less than the preset elapsed time threshold. If it is determined that it is, it is determined that the cause of the wobbling running state cannot be estimated. When the notification unit 24 determines that the factor estimation unit 23 cannot estimate, the notification unit 24 notifies the driver of the fact that the vehicle is in a wobbling running state.

  When the elapsed time from the start of driving is short, or when the elapsed time after the environmental condition of the passenger compartment changes from an uncomfortable state to a comfortable state is short, it is difficult to estimate whether sleepiness is occurring. In such a situation, the fact that the vehicle is in a wobbling state is notified to the driver. This makes it possible to perform appropriate notification when the factor cannot be estimated (it is difficult to estimate).

(6) The factor estimating unit 23 determines that it is detected that the vehicle interior is in an uncomfortable environmental state based on the detection result of the unpleasant state detecting unit 22, and the elapsed time from the preset start timing is preset. If it is determined that the time threshold is exceeded, it is estimated that the cause of the wobbling driving state is due to the driver's sleepiness. When the notification unit 24 determines that the cause of the wobbling running state is due to the driver's sleepiness based on the estimation result of the factor estimation unit 23, the notification unit 24 notifies the driver of a break.

  When the elapsed time from the start of driving is long, or when the elapsed time after the environmental state of the passenger compartment changes from an uncomfortable state to a comfortable state is long, a driver's sleepiness is likely to occur. Therefore, in such a case, the cause of the wobbling driving state is estimated to be due to the driver's sleepiness. In addition, if it was estimated that it was due to sleepiness, the driver was notified of a break. As a result, the driver can be awakened from the sleepy state, or the driver can be prevented from continuing driving in the sleepy state.

(7) The start timing is a timing at the time of determination that the vehicle interior is not in an uncomfortable environmental state based on the timing at the start of driving of the vehicle or the detection result of the unpleasant state detection unit 22.
That is, the start timing is set as the timing at the start of driving or the timing at the time of determination that there is no unpleasant state. As a result, it is possible to estimate the cause of the wobbling traveling state based on the elapsed time of the driving time or the elapsed time of the state that is not in an uncomfortable state (comfort state). For example, when driving for a long time (2 hours or more) or when a comfortable state continues for a long time, the possibility of sleepiness due to driving fatigue or relaxation continues increases. In such a case, sleepiness can be estimated as a factor.

[Second Embodiment]
Next, 2nd Embodiment of this invention is described based on drawing. 5-7 is a figure which shows 2nd Embodiment of the wobbling driving | operation notification apparatus based on this invention. In addition, the same code | symbol is attached | subjected and demonstrated about the structure similar to the said 1st Embodiment.
(Constitution)
FIG. 5 is a schematic configuration diagram of a vehicle equipped with the wobbling driving notification device according to the present embodiment.
As shown in FIG. 5, the vehicle 1 equipped with the wobbling driving notification device of the present embodiment includes a timer 10 in addition to the configuration of the first embodiment. Further, the vehicle 1 includes a vehicle interior temperature setting device 11 that allows a driver to manually adjust a set temperature of an air conditioner (air conditioner). Furthermore, the ECU 2 of this embodiment includes a wobbling operation notification controller 210 instead of the wobbling operation notification controller 200 of the first embodiment.

  And the wobbling driving | running | reporting alerting | reporting apparatus of this embodiment measures the elapsed time after setting temperature is changed. This measurement is performed based on the measurement signal of the timer 10. Further, based on the measured elapsed time, the temperature information transmitted from the vehicle interior temperature sensor 4, and the changed set temperature, it is detected whether or not the environmental state of the vehicle interior is uncomfortable for the driver. This is different from the first embodiment. In addition, when the difference between the set temperature and the vehicle interior temperature is equal to or higher than a preset temperature threshold, the point that the environmental condition in the vehicle interior is detected to be uncomfortable for the driver is also different from the first embodiment.

FIG. 6 is a block diagram illustrating an example of a functional configuration of the wobbling operation notification controller 210 according to the present embodiment.
As shown in FIG. 6, the wobbling operation notification controller 210 has the same basic configuration as the wobbling operation notification controller 200 of the first embodiment.
However, the unpleasant state detection unit 22 is different from the first embodiment in that the set temperature information transmitted from the vehicle interior temperature setter 11 is input and the measurement time information transmitted from the timer 10 is input. Moreover, the point from which various instructions | commands are input with respect to the timer 10 from the unpleasant state detection part 22 differs from the said 1st Embodiment.

  The unpleasant state detection unit 22 according to the present embodiment determines whether or not the environmental state in the passenger compartment is unpleasant for the driver when the detection result indicating the wobbling driving state is acquired from the wobbling operation detection unit 21. This determination process is performed based on the set temperature information transmitted from the vehicle interior temperature setter 11, the temperature information transmitted from the vehicle interior temperature sensor 4, and the measurement time information transmitted from the timer 10.

  Specifically, the unpleasant state detection unit 22 first determines whether or not the set temperature has been changed. If it is determined that the set temperature has been changed, it gives a measurement start command to the timer 10. Thereby, measurement of the elapsed time after determining that the set temperature has been changed is started. When the elapsed time is less than a preset second elapsed time threshold, it is detected that the environmental condition in the vehicle compartment is uncomfortable for the driver. On the other hand, if it is equal to or greater than the second elapsed time threshold, it is detected that the environmental condition in the passenger compartment is comfortable for the driver. Here, the second elapsed time threshold value is stored in the memory 8. The unpleasant state detection unit 22 reads the second elapsed time threshold value from the memory 8 and executes the read second elapsed time threshold value as a determination value before the determination process is executed.

In this embodiment, the unpleasant state detection unit 22 stores the previous set temperature in a memory such as a RAM in order to determine whether or not the set temperature has been changed. Then, it is overwritten and saved every time the set temperature is changed.
If the uncomfortable state detection unit 22 determines that there is no change in the set temperature, it calculates the difference between the temperature in the passenger compartment and the set temperature, and whether the calculated difference is equal to or greater than a preset temperature threshold value. Determine whether or not. And if the unpleasant state detection part 22 determines with the said difference being more than a temperature threshold value, it will detect that the environmental state of a vehicle interior is a state unpleasant for a driver. That is, when the vehicle interior temperature deviates from the set temperature, it is detected that the driver is uncomfortable.

On the other hand, when the difference between the temperature in the passenger compartment and the set temperature is determined to be less than the temperature threshold, the uncomfortable state detector 22 detects that the environmental state in the passenger compartment is comfortable for the driver. Here, the temperature threshold value is stored in the memory 8. The unpleasant state detection unit 22 reads the temperature threshold value from the memory 8 and sets the read temperature threshold value as a determination value before executing the determination process.
Further, when the comfortable state elapsed time is used for the determination, the unpleasant state detection unit 22 gives a time measurement start command to the timer 9 using the timing at the time of determination as the comfortable state as a trigger, and enters the comfortable state. Start measuring elapsed time.
The unpleasant state detection unit 22 outputs the detection result of the comfortable state or the unpleasant state to the factor estimation unit 23.

(Fluctuation driving notification process)
Next, the processing procedure of the wobbling operation notification process performed by the wobbling operation notification controller 210 will be described.
FIG. 7 is a flowchart illustrating an example of the processing procedure of the wobbling operation notification process of the present embodiment.
When the power is turned on (ignition is turned on) and a dedicated program is executed in the wobbling operation notification controller 210, the process first proceeds to step S200 as shown in FIG.

In step S200, processing for initializing timers, counters, and flags used for the subsequent processing is executed, and the process proceeds to step S202.
In step S202, the wobbling driving detection unit 21 acquires the steering angle signal transmitted from the steering angle sensor 3, stores the steering angle information indicated by the acquired steering angle signal in a memory such as a RAM, and proceeds to step S204. To do.

In step S204, a process for detecting whether or not the wobbling driving state is in the wobbling driving detection unit 21 based on the time change of the steering angle indicated by the acquired steering angle information and the time change of the steering angle during normal driving. Execute, and the process proceeds to step S206.
In step S206, the unpleasant state detection unit 22 determines whether or not the vehicle is in a wobbling running state based on the result of the detection process in step S204. When it is determined that the vehicle is in the wobbling running state (Yes), the process proceeds to step S208. When it is determined that it is not (No), the process proceeds to step S230.

When the process proceeds to step S208, the uncomfortable state detection unit 22 acquires set temperature information transmitted from the vehicle interior temperature setter 11, and the process proceeds to step S210.
In step S210, the unpleasant state detection unit 22 reads the previous set temperature from the memory, compares the read set temperature with the set temperature acquired in step S208, and determines whether or not the set temperature has been changed. To do. If it is determined that there is no change in the set temperature (Yes), the process proceeds to step S212. If it is not determined (No), the process proceeds to step S228.

When the process proceeds to step S212, the uncomfortable state detection unit 22 acquires the temperature information transmitted from the vehicle interior temperature sensor 4, and the process proceeds to step S214.
In step S214, the uncomfortable state detection unit 22 calculates a difference between the set temperature acquired in step S208 and the vehicle interior temperature acquired in step S212, and whether the calculated difference is equal to or greater than a preset temperature threshold value. Determine whether. If it is determined that the temperature is equal to or higher than the temperature threshold value (Yes), it is detected that the environmental condition in the passenger compartment is uncomfortable for the driver, the detection result is output to the factor estimating unit 23, and the process proceeds to step S216. . On the other hand, when it is determined that the temperature is less than the temperature threshold (No), it is detected that the environmental condition in the vehicle compartment is comfortable for the driver, and the detection result is output to the factor estimating unit 23 and the process proceeds to step S220. .

When the process proceeds to step S216, the factor estimating unit 23 estimates that the cause of the wobbling driving state is in the driver's sideways state based on the detection result of the uncomfortable state, and outputs the estimation result to the notification unit 24. The process proceeds to step S218.
In step S218, based on the estimation result that the driver's looking-aside state is a factor in the notification unit 24, a notification for alerting the driver's looking-aside state is executed, and the process proceeds to step S230.

  On the other hand, if it is determined in step S210 that the temperature is less than the temperature threshold value and the process proceeds to step S220, the factor estimation unit 23 acquires the measurement time transmitted from the timer 9, and the acquired measurement time is preset. It is determined whether or not one elapsed time threshold is exceeded. If it is determined that the measurement time of the timer 9 is equal to or greater than the first elapsed time threshold value (Yes), the process proceeds to step S222, and if it is not determined (No), the process proceeds to step S226.

Here, the first elapsed time threshold value is stored in the memory 8. The factor estimating unit 23 reads the first elapsed time threshold value from the memory 8 and sets the read first elapsed time threshold value as the determination value before executing the determination process.
When the process proceeds to step S222, the factor estimating unit 23 estimates that the cause of the wobbling driving state is in a state of drowsiness of the driver, outputs the estimation result to the notification unit 24, and proceeds to step S224. .

  In the present embodiment, the factor estimating unit 23 gives a command to start time measurement to the timer 9 with the timing at the start of operation as a trigger. Thereby, the time measurement of driving time is started. And the factor estimation part 23 acquires this measurement time from the timer 9, and estimates a factor by comparing the acquired measurement time with the preset 1st elapsed time threshold value.

  On the other hand, the elapsed time of the comfort state can be used instead of the driving time. In this case, the uncomfortable state detection unit 22 is an unpleasant state based on the temperature information acquisition, the set temperature acquisition, and the difference between the vehicle interior temperature and the set temperature in a preset sampling cycle regardless of the occurrence of the wobbling running state. Or a process of detecting whether the user is in a comfortable state. Then, when the unpleasant state detection unit 22 detects the unpleasant state or determines that the comfortable state is newly established from the initial state (operation start), the unpleasant state detection unit 22 gives a command to start time measurement to the timer 9. Thereby, the time measurement of a comfortable state (suitable temperature state) is started. In addition, when the environmental state of the passenger compartment shifts to an uncomfortable state during measurement by the timer 9, the unpleasant state detection unit 22 stops time measurement for the timer 9 and clears (initializes) the timer. Give the command to do. As a result, the timer 9 stops the time measurement and clears the measurement time to an initial value (for example, 0).

That is, it is highly possible that the wobbling running state that occurs after the time equal to or greater than the first elapsed time threshold has elapsed since the start of driving is caused by driving in a state in which the driver is drowsy (including a sleep state). Therefore, in this case, the factor estimating unit 23 estimates that the factor of the wobbling running state is due to the driver's sleepiness.
Similarly, when the elapsed time in the comfortable state is used, the occurrence of the wobbling running state that occurs after the time equal to or greater than the first elapsed time threshold after the passenger compartment becomes a comfortable temperature state causes the driver to feel sleepy. It is highly likely that the problem has occurred due to the driving operation. Therefore, in this case, the factor estimating unit 23 estimates that the factor of the wobbling running state is due to the driver's sleepiness.

In Step S224, informing part 24 performs information which promotes a break to a driver, and shifts to Step S230.
In step S220, when it is determined that the elapsed time of the comfort state is less than the first elapsed time threshold value and the process proceeds to step S226, the fact that the driver is in a wandering driving state in the notification unit 24. Is transferred to step S230.

  If it is determined in step S210 that the set temperature has been changed and the process proceeds to step S228, the uncomfortable state detection unit 22 acquires the measurement time transmitted from the timer 10. Further, the uncomfortable state detection unit 22 compares the preset second elapsed time threshold value with the acquired measurement time, and determines whether or not the measurement time is equal to or greater than the second elapsed time threshold value. If it is determined that the elapsed time (measurement time) after the set temperature has been changed is equal to or greater than the second elapsed time threshold (Yes), it is detected that the environmental condition in the vehicle compartment is comfortable for the driver, The detection result is output to the factor estimating unit 23. Thereafter, the process proceeds to step S212. Further, when it is determined that the elapsed time (measurement time) after the set temperature is changed is less than the second elapsed time threshold (No), it is detected that the environmental state of the vehicle interior is uncomfortable for the driver, The detection result is output to the factor estimating unit 23. Thereafter, the process proceeds to step S216.

When the process proceeds to step S230, the wobbling operation notification controller 210 determines whether or not the power is turned off. When it is determined that the power is turned off (Yes), the series of processes is terminated, and not so. (No), it transfers to step S202.
Other configurations other than those described above are the same as those in the first embodiment.

(Operation)
Next, the operation of the vehicle 1 equipped with the wobbling driving notification device of this embodiment will be described.
When the ignition switch is turned on and the power is turned on, a dedicated program is executed in the wobbling operation notification controller 210. As a result, initialization processing is executed, and in addition to initialization of the timer and counter, various variables and flags used in the program are initialized (S200). After the initialization process, various information acquired by the steering angle sensor 3 and the vehicle interior temperature sensor 4, setting information from the vehicle interior temperature setter 11, measurement times of the timers 9 and 10, and the like are input to the wobbling operation notification controller 210. Is done.

First, the wobbling driving notification controller 210 acquires the steering angle signal transmitted from the steering angle sensor 3 in the wobbling driving detection unit 21, and stores the steering angle information indicated by the acquired steering angle signal in a memory such as a RAM ( S202).
Further, when the ignition switch is turned on and the engine is started, the factor estimating unit 23 gives a time measurement start command to the timer 9 in order to measure the operation time.
Since the detection result becomes inaccurate until the steering angle information for a preset time (predetermined number) is stored, the fluctuation driving detection unit 21 uncomfortable the detection result that the driving condition is not the fluctuation. It outputs to the state detection part 22 (No of S204, S206).

  When the steering angle information for a preset time is stored, the wobbling operation detection unit 21 compares the stored time change of the steering angle with the time change of the steering angle during normal operation stored in the memory 8. (S204). Specifically, the sum of the absolute values of the differences between the steering angles corresponding to the two is calculated, and the vehicle's vehicle is in a wobbling driving state (the wobbling driving) according to the determination result of whether or not the sum of the absolute values is equal to or greater than a preset threshold value. It is detected whether or not (state) (S206). In the present embodiment, if it is determined that it is equal to or greater than the threshold value, it is detected that the driving state is staggering, and if it is determined that it is less than the threshold value, it is detected that the driving state is not staggering.

Here, it is assumed that it is detected that the host vehicle is in a wobbling running state (Yes in S206). The wobbling operation detection unit 21 outputs the detection result to the unpleasant state detection unit 22.
When the uncomfortable state detection unit 22 acquires the detection result indicating the wobbling running state, the uncomfortable state detection unit 22 acquires the set temperature information transmitted from the vehicle interior temperature setter 11 (S208), and compares it with the previous set temperature stored in the memory. Then, it is determined whether or not the set temperature is not changed (S210).

  Here, it is determined that there is no change (Yes in S210). Thereby, the unpleasant state detection part 22 acquires the temperature information transmitted from the vehicle interior temperature sensor 4 (S212), and calculates the difference between the acquired temperature information and the set temperature. Then, the unpleasant state detection unit 22 determines whether or not the calculated difference is equal to or greater than a preset temperature threshold (for example, 5 ° C.) (S214).

Here, it is determined that the temperature is equal to or higher than the temperature threshold (Yes in S214). Thereby, the unpleasant state detection unit 22 detects that the environmental state in the vehicle compartment is unpleasant for the driver, and outputs the detection result to the factor estimation unit 23.
When the factor estimation unit 23 obtains a detection result indicating that the vehicle is in an uncomfortable state from the uncomfortable state detection unit 22, the factor estimation unit 23 estimates that the cause of the wobbling driving state is in the driver's side-view state and outputs the estimation result to the notification unit 24. (S216).

When the notifying unit 24 obtains an estimation result that the looking-ahead state is a factor from the factor estimating unit 23, the notifying unit 24 is a message image that pays attention to the looking-aside state based on the image information of the message image that notes the looking-aside state stored in the memory 8. Is transmitted to the display 5.
Furthermore, the voice information of the voice message that alerts the aside state is read from the memory 8, and the read voice information is output to the audio device 6. When acquiring the audio information, the audio device 6 generates an audio signal of an audio message corresponding to the audio information, and outputs the generated audio signal to the speaker 7.

As a result, a message image that warns about the side-by-side state such as “Attention to look aside”! At the same time, the speaker 7 outputs a voice message for directing attention from the look-ahead state such as “Please look forward!” And “Please stop looking aside” (S218).
On the other hand, the uncomfortable state detection unit 22 determines that the difference between the set temperature and the vehicle interior temperature is less than the temperature threshold (No in S214), and detects that the environmental state in the vehicle interior is a comfortable state for the driver. It is assumed that the detection result is output to the factor estimating unit 23.

When the factor estimation unit 23 obtains a detection result indicating that the user is in a comfortable state from the unpleasant state detection unit 22, the factor estimation unit 23 compares the measurement time transmitted from the timer 9 with a preset first elapsed time threshold value. And the factor estimation part 23 determines whether the driving | running time (measurement time) became more than 1st elapsed time threshold value (for example, 2 hours) (S220).
The factor estimating unit 23 can use the elapsed time of the comfortable state (the difference between the set temperature and the passenger compartment temperature is less than the temperature threshold) instead of the driving time. In this case, the factor estimation unit 23 determines whether or not the elapsed time (measurement time) since the comfortable state has become equal to or greater than a first elapsed time threshold (for example, 2 hours) (S220).

Here, assuming that the driving time is used for the determination, it is determined that the driving time is equal to or greater than the first elapsed time threshold (Yes in S220). From this determination result, the factor estimating unit 23 estimates that the cause of the wobbling driving state is a state in which the driver is drowsy (including a drowsiness state), and outputs the estimation result to the notification unit 24 (S222). .
When the notification unit 24 acquires an estimation result that the sleepy state is a factor from the factor estimation unit 23, the notification unit 24 reads a message image that promotes a break from the memory 8. Then, the notification unit 24 transmits an image display signal for displaying the read image to the display 5.

Further, the notification unit 24 reads out the voice information of the voice message that promotes a break from the memory 8 and outputs the read-out voice information to the audio device 6. When acquiring the audio information, the audio device 6 generates an audio signal of an audio message corresponding to the audio information, and outputs the generated audio signal to the speaker 7.
As a result, a message image for promoting a break such as “Please take a break in the next ○ × parking area” is displayed on the display 5. At the same time, the speaker 7 will wake up the driver and promote a break, such as “Wake up! Seems you feel sleepy. A message is output (S224).

On the other hand, it is assumed that the factor estimation unit 23 determines that the measurement time (elapsed time) of the timer 9 is less than the first elapsed time threshold (No in S220). The factor estimating unit 23 determines from the determination result that the cause of the wobbling running state cannot be estimated, and outputs the determination result to the notification unit 24.
When the notification unit 24 acquires a determination result in a state that cannot be estimated from the factor estimation unit 23, the notification unit 24 reads a message image that tells the driver that the wobbling running state has occurred from the memory 8. Then, the notification unit 24 transmits an image display signal for displaying the read image to the display 5.

Further, the voice information of the voice message that conveys the fact that the wobbling running state has occurred is read from the memory 8, and the read voice information is output to the audio device 6. When acquiring the audio information, the audio device 6 generates an audio signal of an audio message corresponding to the audio information, and outputs the generated audio signal to the speaker 7.
As a result, a message image indicating the fact that the host vehicle is in a wobbling running state, such as “occurrence of wobbling driving!” Is displayed on the display 5. At the same time, the speaker 7 outputs a voice message informing the driver of the fact that the wobbling running state has occurred, such as “A wobbling running state has occurred” (S226).

  Also, assume that the uncomfortable state detection unit 22 determines that the set temperature has been changed (No in S210). Thereby, the unpleasant state detection part 22 compares the elapsed time (measurement time) after the preset temperature transmitted from the timer 10 is changed with a preset second elapsed time threshold (for example, 10 minutes). . Then, the unpleasant state detection unit 22 determines whether or not the measurement time is greater than or equal to the second elapsed time threshold value (S228).

Here, when the unpleasant state detection unit 22 determines that the elapsed time since the set temperature has been changed is less than the second elapsed time threshold (No in S228), the environmental state in the vehicle compartment is unpleasant for the driver. It detects that it is in a state. The unpleasant state detection unit 22 outputs the detection result to the factor estimation unit 23.
As a result, the factor estimating unit 23 estimates that the cause of the wobbling driving state is the driver's side-by-side state (S216), and the notification unit 24 performs notification corresponding to the side-by-side state (S218).

Further, when the unpleasant state detection unit 22 determines that the elapsed time since the set temperature is changed is equal to or greater than the second elapsed time threshold (Yes in S228), the temperature information transmitted from the vehicle interior temperature sensor 4 Is acquired (S212). The unpleasant state detection unit 22 calculates a difference between the acquired temperature information and the set temperature, and determines whether or not the difference is equal to or greater than a preset temperature threshold (for example, 5 ° C.) (S214). Since the subsequent processing is the same as described above, description thereof is omitted.
Here, in the above description, the wobbling operation detection unit 21 constitutes a wobbling operation detection unit. The unpleasant state detection part 22 comprises an unpleasant state detection means. The factor estimating unit 23 constitutes factor estimating means. The notification unit 24 constitutes a notification unit.

(Effect of this embodiment)
In addition to the effects of the first embodiment, the present embodiment has the following effects.
(1) The unpleasant state detection unit 22 is based on the temperature information in the passenger compartment and the set temperature information of the air conditioner included in the vehicle, and the difference between the passenger compartment temperature and the preset temperature is equal to or greater than a preset temperature difference. The vehicle interior is detected as an unpleasant environmental condition for the driver.
An unpleasant environmental condition in the passenger compartment is detected from the difference between the set temperature information of the vehicle air conditioner and the passenger compartment temperature. As a result, it is possible to detect an unpleasant environmental condition in the passenger compartment without introducing new equipment and with a relatively low load process such as a comparison process.

(2) The unpleasant state detection unit 22 detects that the vehicle interior is in an unpleasant environmental state for the driver during a period from when a change in the set temperature of the air conditioner is detected until a preset time elapses.
After the set temperature is changed, the difference between the vehicle interior temperature and the set temperature increases for a while. Such a state is uncomfortable for the driver. Therefore, after the set temperature is changed, the vehicle interior is detected to be in an unpleasant environment state for the driver until a preset time elapses. As a result, it is possible to detect an unpleasant environmental condition in the passenger compartment without introducing new equipment and by a relatively low load process such as comparing the elapsed time with a preset time.

(Modification)
(1) In the above embodiment, the configuration is such that it is determined whether or not the environmental state in the vehicle interior is uncomfortable for the driver based on the temperature information in the vehicle interior, but the configuration is not limited thereto. For example, a measurement device that measures information related to other environments such as a hygrometer is installed in the passenger compartment, and a configuration that determines whether or not the state is uncomfortable based on other measurement information, temperature information and other information. It is good also as other structures, such as the structure which determines whether it is an unpleasant state using together.

(2) In the above-described embodiment, the three states of the sleepy state, the looking-aside state, and the state that cannot be estimated are estimated or determined as factors of the wobbling running state. However, the present invention is not limited to this configuration. For example, in addition to the side-by-side driving state based on the contents of the wobbling pattern, other states such as a casual driving state may be distinguished and estimated so that the factors of the wobbling driving state may be estimated more finely.

(3) In the above embodiment, the configuration using the change in the steering angle in the detection process of the wobbling running state has been described. However, the configuration is not limited to this configuration. For example, if the vehicle is equipped with a camera or the like that captures white lines on the road, the wobbling running state of the vehicle is detected based on the captured image instead of or in addition to the steering angle. It may be. In addition, if the vehicle is equipped with a yaw rate sensor, the detection value of the yaw rate sensor may be used.

The above embodiments are preferable specific examples of the present invention, and various technically preferable limitations are given. However, the scope of the present invention is described in particular in the above description to limit the present invention. As long as there is no, it is not restricted to these forms. In the drawings used in the above description, for convenience of illustration, the vertical and horizontal scales of members or parts are schematic views different from actual ones.
In addition, the present invention is not limited to the above-described embodiments, and modifications, improvements, equivalents, and the like within the scope that can achieve the object of the present invention are included in the present invention.

1 Vehicle equipped with staggered driving notification device 2 ECU
3 Steering angle sensor 4 Vehicle interior temperature sensor 5 Display 6 Audio device 7 Speaker 8 Memory 9 and 10 Timer 11 Vehicle interior temperature setter 21 Staggered operation detection unit 22 Discomfort state detection unit 23 Factor determination unit 24 Notification unit 200 and 210 Staggered operation Notification controller

Claims (7)

Based on information relating to the running state of the vehicle, the wobbling driving detecting means for detecting the wobbling running state of the vehicle,
An unpleasant state detecting means for detecting an unpleasant environmental state for the driver in the passenger compartment based on information relating to the environment in the passenger compartment;
Based on the detection results of the stagger driving detection means and the unpleasant state detection means, factor estimating means for estimating whether the factor of the wobbling running state of the vehicle is due to the driver's drowsiness or other than drowsiness;
Based on the estimation result of the factor estimation means, and a notification means for performing notification according to the estimation result to the driver,
When the uncomfortable state detection means determines that the vehicle interior temperature is outside a preset comfortable temperature range, the vehicle interior is detected as an uncomfortable environmental state for the driver,
If the factor estimating means determines that the wobbling driving state has been detected and determines that the uncomfortable environmental state has been detected, the factor estimating means estimates that the factor of the wobbling driving state is due to the driver's looking aside. A wobbling driving notification device characterized by that. Based on information relating to the running state of the vehicle, the wobbling driving detecting means for detecting the wobbling running state of the vehicle,
An unpleasant state detecting means for detecting an unpleasant environmental state for the driver in the passenger compartment based on information relating to the environment in the passenger compartment;
Based on the detection results of the stagger driving detection means and the unpleasant state detection means, factor estimating means for estimating whether the factor of the wobbling running state of the vehicle is due to the driver's drowsiness or other than drowsiness;
Based on the estimation result of the factor estimation means, and a notification means for performing notification according to the estimation result to the driver,
The unpleasant state detection means, based on the temperature information in the vehicle interior and the set temperature information of the air conditioning device provided in the vehicle, when the difference between the vehicle interior temperature and the set temperature is greater than or equal to a preset temperature difference, Detecting that the passenger compartment is in an unpleasant environmental state for the driver;
If the factor estimating means determines that the wobbling driving state has been detected and determines that the uncomfortable environmental state has been detected, the factor estimating means estimates that the factor of the wobbling driving state is due to the driver's looking aside. A wobbling driving notification device characterized by that. The uncomfortable state detecting means detects that the vehicle interior is in an unpleasant environmental state for the driver during a period from when a change in the set temperature of the air conditioner is detected until a preset time elapses. The wobbling driving notification device according to claim 2 . The wobble operation detecting means, based on the change in the steering angle, wobble operation notification apparatus according to any one of claims 1 to 3, characterized in that detecting the wobble traveling state of the vehicle. The factor estimating unit determines that the vehicle interior is not in the unpleasant environmental state based on a detection result of the unpleasant state detecting unit, and an elapsed time from a preset start timing is less than a preset elapsed time threshold. If it is determined that there is, it is determined that the cause of the wobbling running state is a state that cannot be estimated,
The said notification means notifies the fact that the said vehicle is in a wobbling traveling state to the driver when the factor estimating means determines that the estimation is impossible. The wobbling driving notification device according to any one of 4 . The factor estimating means determines that the vehicle interior is detected to be in the unpleasant environmental state based on the detection result of the unpleasant state detecting means, and the elapsed time from a preset start timing is preset. If it is determined that the threshold value is greater than or equal to the threshold, the factor of the wobbling running state is estimated to be due to the driver's sleepiness
The said notification means performs the notification which urges | provides a rest with respect to the said driver, when it determines with the said factor of the wobbling running state being based on the estimation result of the said factor estimation means due to the sleepiness of the said driver. The wobbling operation notification device according to any one of claims 5 to 5 . The start timing, claim 5 or, characterized in that the passenger compartment based on a detection result of the timing or the unpleasant condition detecting means at the start of operation of the vehicle is a timing determined not to be the unpleasant environmental conditions The wobbling driving notification device according to claim 6 .

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