JP2003245357A - Mental/physical state-maintaining apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To maintain an optimal mental/physical state corresponding to an operating status or a working status. <P>SOLUTION: A mental/physical state-estimating unit 3 estimates an operator tension degree Sd (t) corresponding to a head shaking of an operator which is detected by a mental/physical information detecting unit 1, referring to a head shaking-tension degree map of a mental/physical database 2. An operation status-estimating unit 6 estimates an optimal tension degree So (t) corresponding to a speed and acceleration/deceleration detected by an operation environment- detecting unit 4, referring to a vehicle state map of an environmental data base 5. An environment-controlling unit 7 calculates a mental/physical state index F (t) (=Sd(t)/So(t)) indicating the operator tension degree Sd (t) to the optimal tension degree So (t). Then, the environment-controlling unit 7 makes a minus ion-generating apparatus 8 generates minus ions, or makes a fragrance- generating apparatus 9 generate the fragrance of lemon based on a relationship between the mental/physical state index F (t) and optimal threshold values F1 and F2. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a psychosomatic state maintaining device, and more particularly to a psychosomatic state maintaining device for maintaining a proper tension for a driver or a worker.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
In order to suppress drowsiness and stress during driving, a technique has been proposed in which a driving environment is acted on in accordance with a human physiological phenomenon.

Japanese Unexamined Patent Publication (Kokai) No. 8-40065 proposes a vehicle air conditioner (hereinafter referred to as "prior art 1") that supplies a fragrance selected according to the occupant's preference, time zone, and whether or not to smoke. Has been done. The prior art 1 is intended to reduce the drowsiness and stress of the driver by supplying the fragrance selected according to the physiological phenomenon of the human body into the vehicle interior, and to drive the vehicle safely.

The prior art 1 automatically supplies the scent for awakening into the vehicle compartment at a predetermined time such as midnight or early morning,
Even when smoking is detected, the smoke-free fragrance is automatically supplied into the passenger compartment. Therefore, in the related art 1, since the predetermined operation is performed without judging whether or not the driver is sleepy or the mental and physical condition when the driver smokes, the driver may feel annoyed. , There were times when it was not possible for the driver to maintain the optimal mental and physical condition.

On the other hand, it is preferable that not only the operation but also the work in various manufacturing processes, work such as office work, etc., that the worker be in a physical and mental state according to the work.

Japanese Unexamined Patent Publication No. 2001-41531 discloses an environment control device and a care house (hereinafter referred to as "prior art 2") for optimally controlling a housing equipment device according to the physical and mental condition of a resident in a general living environment. ) Is proposed.

[0007] However, the prior art 2 only detects the acute stress reaction and alleviates it, and does not maintain moderate tension.

The present invention has been proposed to solve the above-mentioned problems, and an object of the present invention is to provide a psychosomatic state maintaining device capable of maintaining an optimal psychosomatic state according to a driving situation or a working situation. And

[0009]

The invention according to claim 1 is
Psychosomatic information detection means for detecting the psychosomatic information of the driver, based on the psychosomatic information detected by the psychosomatic information detection means, the psychosomatic state estimation means for estimating the psychosomatic state of the driver, and the environmental information of the driver Environmental information detecting means for detecting, and based on the environmental information detected by the environmental information detecting means, a reference psychosomatic state estimating means for estimating a reference psychosomatic state corresponding to the current driving situation, and an estimation by the psychosomatic state estimating means Environment adjusting means for adjusting the environment of the driver based on the present current physical and physical condition and the reference physical and physical condition estimated by the reference mental and physical condition estimating means.

The psychosomatic information is not particularly limited as long as it is information that can be used to estimate the physical condition of the driver, and any of the work amount of the driver, the physiological amount of the driver, and the physical amount generated in the driver or the object. But it's okay. The work amount of the driver corresponds to, for example, the accelerator amount, the brake amount, and the steering angle. The driver's physiological amount corresponds to, for example, heartbeat, skin potential, skin electrical resistance, and blink. The physical quantity generated in the driver or the object corresponds to, for example, body acceleration or body pressure (pressure between the driver and the back seat). The psychosomatic information is not limited to one of the above-mentioned parameters, and may be two or more.

The psychosomatic state estimating means estimates the psychosomatic state of the driver based on the psychosomatic information. As the mental and physical state, for example, the current degree of tension of the driver is preferable, but a parameter having a relationship between the degree of tension and the front and back, for example, a degree of relaxation may be used.

The environmental information is not particularly limited as long as it is information related to the driving environment of the driver, and may be any of the external environment, vehicle state, and time information. The external environment corresponds to, for example, road type, traffic volume, weather, and illuminance. The vehicle state includes, for example, vehicle speed, acceleration / deceleration, yaw rate, inter-vehicle distance (including distance to front obstacle), vehicle interior temperature, and vehicle interior humidity. The time information corresponds to, for example, the operating time, the device operation duration, and the time. The environmental information is not limited to one of the above-mentioned parameters,
It may be more than one.

The reference mental-physical state estimating means estimates the reference mental-physical state corresponding to the current driving condition based on such environmental information. The reference psychosomatic state is, for example, preferably a reference tension, but may be a parameter having a relationship between the tension and the front and back, for example, a reference relaxation degree. Further, the reference psychosomatic state may be an optimal psychosomatic state for the driver to drive, or a psychosomatic state in which the driver is a little relaxed or a little nervous than the optimal psychosomatic information.
Furthermore, since the reference psychosomatic state always corresponds to the current driving situation, when the driving situation changes due to changes in the environmental information, the reference psychosomatic state also changes.

The environment adjusting means adjusts the environment of the driver based on the current psychosomatic state and the reference psychosomatic state. Therefore, when the person is overly tense, the tension is relieved to reduce fatigue caused by driving, and when the attention is distracted, the psychosomatic state is activated to increase the tension. This makes it possible to maintain an appropriate sense of tension depending on the driving situation, and to perform driving safely and smoothly.

According to a second aspect of the present invention, the mind and body information detecting means for detecting the mind and body information of the worker, and the mind and body state for estimating the mind and body state of the worker based on the mind and body information detected by the mind and body information detecting means. Estimating means, environment information detecting means for detecting the environment information of the worker, and reference mind-body state for estimating a reference mind-body state corresponding to the current work situation based on the environment information detected by the environment information detecting means. Estimation means,
Environment adjusting means for adjusting the environment of the worker based on the current psychosomatic state estimated by the psychosomatic state estimating means and the reference psychosomatic state estimated by the reference psychosomatic state estimating means.

The work performed by the worker is not particularly limited, and may be any work that requires an appropriate sense of tension, such as work on a production line in a factory. The mind and body information detecting means and the mind and body state estimating means are configured in the same manner as in claim 1. The environment information may be the same parameters as in claim 1 or may be work status (work difficulty, progress status). Further, the environment information is not limited to one of the above-mentioned parameters and may be two or more.

The reference mind-body state estimating means estimates the reference mind-body state corresponding to the current work situation based on such environmental information. The standard mental and physical condition is the same as that of claim 1.

The environment adjusting means adjusts the environment of the worker based on the current psychosomatic state and the reference psychosomatic state. Therefore, when the person is overly tense, the tension is relieved to reduce the fatigue caused by work, and when the attention is distracted, the physical and mental state is activated to increase the tension. This makes it possible to maintain an appropriate sense of tension depending on the work situation, and to perform work safely and smoothly.

The invention according to claim 3 is the invention according to claim 1 or 2.
In the invention described above, the environment adjusting means adjusts the environment so that the current psychosomatic state matches the reference psychosomatic state.

As a result, the psychosomatic state of the driver or the worker converges to the reference psychosomatic state, so that the psychosomatic state is stabilized and the driving or work can be safely and smoothly performed.

Here, it is preferable that the environment adjusting means calculates a psychosomatic state ratio, which is a ratio between the present psychosomatic state and the reference psychosomatic state, and adjusts the environment so that the psychosomatic state ratio falls within a predetermined range.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the environment adjusting means is negative ions, scent, sound, vibration, air of a predetermined temperature, air of a predetermined humidity. Is output to adjust the environment.

Negative ions have a tension-relieving effect and scent has a psychosomatic activity effect. Since the driver's mood also changes depending on the type of scent, a predetermined scent may be selected depending on the driving situation. If anions and scents alone are not enough, sound, vibration, temperature and humidity can be applied to further enhance the effect.

Therefore, the environment adjusting means adjusts negative ions, scent, sound, vibration, temperature, and humidity to create an optimum environment for driving and working, thereby reducing fatigue and preventing a decrease in attention. Thus, it is possible to maintain the optimal mental and physical condition for driving and working.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment] FIG. 1 is a block diagram showing the configuration of a psychosomatic state maintaining apparatus according to the first embodiment.

The psychosomatic state maintenance device comprises a psychosomatic information detection unit 1 for detecting the psychosomatic information of the driver, a psychosomatic database 2 for storing information on the psychosomatic state of the driver, and a driver tension indicating the psychosomatic state of the driver. A psychosomatic state estimation unit 3 that estimates Sd (t), a driving environment detection unit 4 that detects a driving environment,
Environmental database 5 that stores information about the driving environment
And the optimal tension S that is the optimal tension depending on the driving situation
a driving situation estimation unit 6 that estimates o (t), an environment control unit 7 that generates a negative ion generation signal and a scent generation signal based on the driver's tension Sd (t) and the optimum tension So (t). A negative ion generation device 8 that generates negative ions according to a negative ion generation signal and a scent generation device 9 that generates a scent of lemon according to a scent generation signal are provided.

The mind-body information detector 1 detects information indicating the driver's mind and body, for example, the vibration of the driver's head, and supplies it to the mind-body state estimation unit 3. The mind-body database 2 stores a head vibration-tension degree map representing the degree of tension corresponding to the head vibration.

FIG. 2 is a diagram showing an example of a head vibration-tension degree map. According to the head vibration-tension degree map, head vibration is divided into three stages of "large", "medium", and "small", and the degree of tension is "small (0-3 ) ",
Three levels of "medium (3 to 6)" and "large (6 to 9)" are assigned. The head vibration-tension degree map may be a general driver model map or a map updated for each driver.

The psychosomatic state estimation unit 3 is provided in the psychosomatic database 2
By referring to the head vibration-tension degree map stored in the driver, the driver's tension Sd (t) corresponding to the driver's head vibration detected by the mind-body information detection section 1 is estimated, and the environment control section is estimated. Supply to 7.

In the present embodiment, the driving environment detecting section 4 detects the speed and the acceleration / deceleration and supplies them to the driving situation estimating section 6.
The environment database 5 includes speed, acceleration / deceleration, and optimal tension S.
A vehicle state map representing the relationship of o (t) is stored.

FIG. 3 is a diagram showing an example of the vehicle state map. The vehicle state map is based on "acceleration / deceleration" when traveling at a predetermined "speed", and the optimum tension So (t) (= 1
9 is a map for estimating 9).

Here, the "speed" is, for example, 30 km / h.
"Low speed" up to 30 ~ 80km / h "medium speed", 80
There is a "high speed" of more than km / h. "Acceleration / deceleration" means, for example, "small" indicating that the acceleration / deceleration per predetermined time is less than N times, "medium" indicating that the acceleration / deceleration is N times or more and less than M times, and "high" indicating that the acceleration / deceleration is M times or more. There is. According to the vehicle state map, the optimum tension So (t) increases as the speed increases, and also increases as the acceleration / deceleration increases.

The driving condition estimating unit 6 is provided in the environment database 5
The optimum tension So (t) corresponding to the current driving situation is estimated based on the vehicle state map stored in the vehicle speed map and the speed and acceleration / deceleration detected by the driving environment detection unit 4, and the environment control unit 7 Supply.

The environment control unit 7 controls the psychosomatic state index F indicating the driver's tension Sd (t) with respect to the optimum tension So (t).
(T) (= Sd (t) / So (t)) is calculated. The psychosomatic state index F (t) is an index that indicates whether the driver's tension Sd (t) is large, small, or about the same, based on the optimal tension according to the current driving situation. It is preferable that the value is close to the Here, the physical and mental condition index F (t)
Set the optimum range of as follows.

F2.ltoreq.F (t) .ltoreq.F1 Note that F1 and F2 are optimum thresholds, and F1> F2.

Then, the environment control section 7 determines the psychosomatic state index F.
When (t) is equal to or greater than the optimum threshold F1, a negative ion generation signal is generated and supplied to the negative ion generator 8.
Further, when the psychosomatic state index F (t) is less than the optimum threshold F2, a scent generation signal is generated and supplied to the scent generation device 9. In addition, the environment control unit 7 determines the physical and mental state index F.
When (t) is greater than or equal to the optimum threshold F2 and less than the optimum threshold F1, neither the negative ion generation signal nor the scent generation signal is generated.

The negative ion generator 8 generates negative ions inside the vehicle when the negative ion generation signal is supplied from the environment control section 7, and stops the generation of negative ions when the negative ion generation signal is not supplied. To do. Further, the scent generating device 9 generates the scent of lemon inside the vehicle when the scent generating signal is supplied from the environment control unit 7, and stops the generation of the scent of lemon when the scent generating signal is not supplied.

FIG. 4A is a diagram showing a change over time in the driver's tension Sd (t) estimated by the mental and physical state estimating section 3, and FIG. 4B.
Is the optimum tension So (t) estimated by the driving situation estimation unit 6
, (C) is a diagram showing a temporal change of the mind-body state index F (t) calculated by the environment control unit 7, and (D) is a diagram showing an operating state of the negative ion generator 8. E)
FIG. 6 is a diagram showing an operating state of the scent generating device 9.

The driver's tension Sd (t) is as shown in FIG. 9 (A), and the optimum tension So (t) is as shown in FIG.
Then, the psychosomatic state index F (t) becomes equal to or more than the optimum threshold value F1 at times t1 to t2 and times t3 to t4, as shown in FIG. Also, the physical and physical condition index F (t)
Has become equal to or greater than the optimum threshold F2 and less than the optimum threshold F1 from time t2 to t3, time t4 to t5, and time t6. Furthermore, the psychosomatic state index F (t) is calculated from time t5 to t6.
In, the value became less than the optimum threshold F2.

As a result, the negative ion generator 8 is
As shown in FIG. 3D, time t1 to t2, time t3 to
Negative ions were generated at t4. The scent generator 9
As shown in (E) of the same figure, a lemon scent was generated at times t5 to t6.

As described above, the psychosomatic state maintaining device according to the first embodiment of the present invention is the psychosomatic state index F (t) indicating the current driver's tension Sd (t) with respect to the optimum tension So (t).
It is possible to determine whether or not the driver has the degree of tension according to the driving situation by calculating and calculating the psychosomatic state index F (t) and the optimum threshold F1 and the optimum threshold F2.

When the psychosomatic state index F (t) is greater than or equal to the optimum threshold F1, negative ions are generated in the vehicle, so that excessive tension of the driver can be relieved. Further, when the physical and mental condition index F (t) is less than the optimum threshold F2, the scent of lemon is generated in the vehicle to activate the mental and physical state of the driver and prevent distraction.

By repeating such processing, the psychosomatic state maintenance device keeps the psychosomatic state index F (t) at or above the optimum threshold value F2 and below the optimum threshold value F1 so as to optimize the driver according to the driving situation. You can maintain a sense of tension.

In this embodiment, the driving situation estimating unit 6 estimates the optimum tension So (t) according to the driving situation, but the present invention is not limited to this. For example, the degree of tension indicating a state in which the degree of relaxation is slightly relaxed or slightly higher than the optimal degree of tension So (t) may be estimated.

[Second Embodiment] Next, a second embodiment will be described. The same parts as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 5 is a block diagram showing the configuration of the psychosomatic state maintaining apparatus according to the second embodiment. The psychosomatic state maintenance device further includes a generation pattern control unit 10 in addition to the constituent parts shown in FIG.

The generation pattern control unit 10 stores the generation pattern of the scent of negative ions and lemon. The generation pattern includes, for example, a pattern in which a negative ion or a scent of lemon is intermittently generated in a predetermined cycle, a pattern in which the time for generating a negative ion or a scent of lemon is gradually increased, and is not particularly limited. In the present embodiment, the generation pattern of negative ions and the generation pattern of lemon are different in generation cycle and generation time, but they may be the same.

As in the first embodiment, the environment controller 17 controls the driver's tension Sd with respect to the optimum tension So (t).
Psychosomatic state index F (t) (= Sd (t) / S indicating (t)
Calculate o (t)). And the physical and physical condition index F (t)
Is greater than or equal to the optimum threshold F1, the generation pattern control unit 1
A negative ion generation signal is generated according to the negative ion generation pattern stored in 0, and the physical and mental state index F
When (t) becomes less than the optimum threshold F1, the generation of the negative ion generation signal is stopped.

Further, the environment control section 17 determines the psychosomatic state index F.
When (t) is less than the optimum threshold F2, a scent generation signal is generated in accordance with the lemon scent generation pattern stored in the generation pattern control unit 10, and the psychosomatic state index F (t) is equal to or greater than the optimum threshold F2. Then, the generation of the scent generation signal is stopped.

FIG. 6 (A) is a diagram showing a change over time in the driver's tension Sd (t) estimated by the mental and physical state estimating section 3, and FIG. 6 (B).
Is the optimum tension So (t) estimated by the driving situation estimation unit 6
, (C) is a diagram showing a temporal change of the mind-body state index F (t) calculated by the environment control unit 7, and (D) is a diagram showing an operating state of the negative ion generator 8. E)
FIG. 6 is a diagram showing an operating state of the scent generating device 9.

As shown in FIG. 7C, the psychosomatic state index F
(T) is equal to or greater than the optimum threshold F1 at times t1 to t2 and times t3 to t4, and is less than the optimum threshold F2 at times t5 to t6.

The negative ion generator 8 is shown in FIG.
As shown in, at time t1 to t2 and time t3 to t4, negative ions are generated for a predetermined time every predetermined cycle,
Negative ions were not generated at other times.
The scent generating device 9, as shown in FIG.
At ~ t6, the scent of lemon was generated for a predetermined time in each predetermined cycle, and the scent of lemon was not generated for the other time.

As described above, since the mind-body information detector according to the second embodiment can generate negative ions according to a predetermined generation pattern, the effect of relaxing tension of negative ions may decrease due to habituation. Can be prevented. In addition, since the scent of lemon is generated according to a predetermined generation pattern, it is possible to prevent the psychosomatic activity effect of the scent from being lowered by habituation.

[Third Embodiment] Next, a third embodiment will be described. The same parts as those in the above-described embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

The psychosomatic state maintaining device according to the present embodiment is
The configuration is almost the same as that of the first embodiment. In addition,
The mind-body information detection unit 1 is a steering angle sensor that detects the steering angle of the steering wheel. Further, the mind-body database 12 stores the optimum threshold value F3 and the optimum threshold value F4 used when estimating the driver's tension Sd (t).

FIG. 7 is a diagram showing the change over time of the steering angle detected by the mind-body information detector 1. The mind-body information detector 1
The steering angle as shown in the figure is detected and supplied to the psychosomatic state estimation unit 3.

FIG. 8 is a diagram showing the power spectrum density of the steering angle. The psychosomatic state estimating unit 3 integrates within the range of 0.15 to 0.50 [Hz] of the steering angle power spectrum, and uses this integrated value as a band component.

Then, the psychosomatic state estimating section 3 determines whether or not the band component of the steering angle is within ± σ of the average value X. Here, the average value X is an average value of the band component when the driver has a moderate tension. The average values X and σ are preset values.

FIG. 9 shows a steering angle of 0.15 to 0.50 [H].
It is a figure which shows the time-dependent change of the band component in z]. When the band component is equal to or more than the optimum threshold F3 (= X + σ), the steering amount is large and the driver's tension is low. On the contrary, when the band component is less than the optimum threshold F4 (= X−σ), the steering amount is small and the driver's tension is high.

Therefore, when the psychosomatic state estimating unit 3 determines that the band component is equal to or more than the optimum threshold F3, the driver's tension Sd (t) is set to a small value, and the band component becomes less than the optimum threshold F4. If it is determined that the driver tension is set, the driver's tension Sd (t) is set to a large value. When it is determined that the band component is equal to or more than the optimum threshold value F4 and less than the optimum threshold value F3, the driver's tension Sd (t) is set to an intermediate value.

Based on the driver's tension Sd (t) thus obtained and the current optimum tension So (t) estimated by the driving condition estimator 6, the environment control unit 7 determines the first value. Similar to the embodiment described above, the negative ion generator 8 is caused to generate negative ions, and the scent generator 9 is caused to generate a lemon scent.

As described above, the psychosomatic state maintaining apparatus according to the third embodiment estimates the driver's tension Sd (t) based on the steering amount of the driver, and the same as in the first embodiment. To
It is possible to determine whether or not the driver has a degree of tension according to the driving situation. Then, by relieving the driver's excessive tension or activating the driver's mind and body to prevent distraction, the driver can maintain an optimal sense of tension according to the driving situation.

The present invention is not limited to such an embodiment, but can be modified as follows, for example.

For example, the psychosomatic state estimating unit 3 calculates the band component within the range of 0.15 to 0.50 [Hz] of the steering angle power spectrum, but may calculate the band component at another frequency. . In addition, the optimum threshold F3 and the optimum threshold F4
May be a fixed value or a different value depending on the driver.

In the present embodiment, the driver's tension Sd (t) is estimated in three stages of large, medium and small, but the driver's tension Sd (t) is estimated in four or more stages using many threshold values. It can also be estimated. Further, the driver's tension S depending on the difference between the predetermined band component of the steering angle and the predetermined reference value (for example, the average value X).
You may estimate d (t).

[Fourth Embodiment] Next, a fourth embodiment will be described. The same parts as those in the above-described embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

The mental and physical condition maintenance apparatus according to the present embodiment is
The configuration is almost the same as that of the first embodiment. In addition,
The mind-body information detection unit 1 is a head vibration sensor that detects vertical vibration of the driver's head and a seat vibration sensor that detects vertical vibration of the seat. Also, the mind-body database 12
Stores the optimum threshold value F5 and the optimum threshold value F6 used when estimating the driver's tension Sd (t).

First, the psychosomatic state estimating section 3 performs a spectrum analysis of the head vibration level detected by the psychosomatic information detecting section 1 to obtain the power spectral density Head_z. Further, the spectrum analysis of the seat vibration level detected by the mind-body information detection unit 1 is performed to obtain the power spectrum density Seat.
Find _z.

FIG. 10A is a diagram showing a temporal change of the head vibration level detected by the mind-body information detecting section 1, and FIG. 10B is a diagram showing a power spectrum density Head_z of the head vibration level.

FIG. 11A is a diagram showing a change over time in the seat vibration level detected by the mind-body information detecting section 1, and FIG. 11B is a diagram showing a power spectrum density Seat_z of the seat vibration level.

Next, the psychosomatic state estimating unit 3 indicates how much the seat vibration is transmitted to the driver's head based on the power spectrum density Head_z of the head vibration and the power spectrum density Seat_z of the seat vibration. The vibration transmissibility (= Head_z / Seat_z) is calculated.

FIG. 12 is a diagram showing the vibration transmissibility. The psychosomatic state estimation unit 3 calculates the vibration transmissibility by a predetermined frequency (for example,
5.0 to 5.5 Hz), and the integrated value is used as a band component. Then, the psychosomatic state estimating unit 3 determines whether or not the band component of the vibration transmissibility is within the range of ± σ of the average value Y. Here, the average value Y is an average value of the band component when the driver is in a moderate tension. The average values Y and σ are preset values.

FIG. 13 shows the vibration transmissibility of 5.0 to 5.5.
It is a figure which shows the time-dependent change of the band component in [Hz].
When the band component is equal to or more than the optimum threshold F5 (= Y + σ), the vibration transmissibility from the seat to the head is large and the driver's tension is low. On the contrary, the band component is the optimum threshold F6 (=
If it is less than Y−σ), the vibration transmissibility from the seat to the head is small and the driver's tension is high.

Therefore, when the psychosomatic state estimating unit 3 determines that the band component is equal to or more than the optimum threshold value F5, the driver's tension Sd (t) is set to a small value, and the band component becomes less than the optimum threshold value F6. If it is determined that the driver tension is set, the driver's tension Sd (t) is set to a large value. When it is determined that the band component is equal to or greater than the optimal threshold F6 and less than the optimal threshold F5, the driver tension Sd (t) is set to a medium value.

Then, the environment control unit 7 calculates the driver's tension Sd (t) thus obtained and the current optimum tension So (t) estimated by the driving situation estimation unit 6 based on the driver's tension Sd (t).
Negative ions are generated in the negative ion generator 8 and lemon scent is generated in the scent generator 9.

As described above, the psychosomatic state maintenance apparatus according to the fourth embodiment estimates the driver's tension Sd (t) based on the vibration transmissibility from the seat to the driver's head, and Similar to the first embodiment, it is possible to determine whether the driver has the degree of tension according to the driving situation. And
By relieving the driver's excessive tension or activating the driver's mind and body to prevent distraction, the driver can maintain an optimal sense of tension according to the driving situation.

The present invention is not limited to such an embodiment, but can be modified as follows, for example.

For example, the psychosomatic state estimating unit 3 calculates the band component in the vibration transmissibility of 5.0 to 5.5 [Hz], but may calculate the band component in other frequencies. Further, the optimum threshold value F5 and the optimum threshold value F6 may be fixed values or different values depending on the driver.

In the present embodiment, the driver's tension Sd (t) is estimated in three stages of large, medium and small, but the driver's tension Sd (t) is estimated in four or more stages by using many thresholds. It can also be estimated. Further, the driver's tension Sd (t) may be estimated according to the difference between the predetermined frequency component of the vibration transmissibility and a predetermined reference value (for example, the average value Y).

[Fifth Embodiment] Next, a fifth embodiment will be described. The psychosomatic state maintaining apparatus according to the fifth embodiment is for maintaining the psychosomatic state of an operator in an optimum state during work on a production line of a factory and other work.

FIG. 14 is a block diagram showing the structure of the psychosomatic state maintaining apparatus according to the fifth embodiment.

The psychosomatic state maintaining device includes a psychosomatic information detecting section 11 for detecting the psychosomatic information of an operator, a psychosomatic database 12 for storing information on the psychosomatic body of each worker, and a worker tension indicating the psychosomatic state of the worker. A psychosomatic state estimation unit 13 that estimates Sd (t), a work environment detection unit 14 that detects the work environment, an environment database 15 that stores information about the work environment, and an optimal tension So (t) according to the work situation. And the worker's tension Sd
An environment control unit 17 that generates a negative ion generation signal and a scent generation signal based on (t) and the optimum tension So (t).
A negative ion generation device 18 that generates negative ions according to the negative ion generation signal, and a scent generation device 19 that generates a lemon scent according to the scent generation signal;
Is equipped with.

The mind-body information detector 11 detects information indicating the mind and body of the worker, for example, the heartbeat of the worker and supplies it to the mind-body state estimation unit 13. The mind-body database 12 stores a heart rate variability-tension degree map that represents the degree of tension corresponding to the heart rate variability.

FIG. 15 is a diagram showing an example of the heartbeat fluctuation-tension degree map. According to the heart rate variability-tension degree map, the heart rate variability is divided into three stages of “large”, “medium”, and “small”,
With respect to the heart rate variability of each stage, the degree of tension is “small (0 to
2) ”,“ medium (2-4) ”, and“ large (4-6) ”are assigned. The heart rate variability-strain degree map may be a general worker model map or a map updated for each worker.

The mind-body state estimating section 13 refers to the heart rate variability-tension degree map stored in the mind-body database 12,
The worker tension Sd (t) corresponding to the heartbeat fluctuation of the worker detected by the mind-body information detection unit 11 is estimated and supplied to the environment control unit 17.

The work environment detecting section 14 detects the work content. The environment database 15 stores a difficulty level-tension level map that indicates the degree of tension corresponding to the difficulty level of the work content.

FIG. 16 is a diagram showing an example of the difficulty level-tension level map. According to the difficulty-tension degree map, the degree of difficulty of the work content is divided into three levels of "low", "medium", and "high", and the degree of tension is "small (0 ~
2) ”,“ medium (2-4) ”, and“ large (4-6) ”are assigned.

The work situation estimating unit 16 determines the optimum tension corresponding to the current work situation based on the difficulty level-tension degree map stored in the environment database 15 and the work content detected by the work environment detecting unit 14. The degree So (t) is estimated and supplied to the environment control unit 17.

As in the first embodiment, the environment control section 17 determines the worker tension Sd with respect to the optimum tension So (t).
Psychosomatic state index F (t) (= Sd (t) / S indicating (t)
Calculate o (t)). The psychosomatic state index F (t) is an index indicating whether the worker's tension Sd (t) is large, small, or about the same as the optimum tension according to the current work situation. Here, the optimum range of the psychosomatic state index F (t) is set as follows.

F8 ≦ F (t) ≦ F7 It should be noted that F7 and F8 are optimum thresholds, and F7> F8.

Then, the environment control unit 17 generates a negative ion generation signal when the psychosomatic state index F (t) is equal to or more than the optimum threshold F7, and supplies it to the negative ion generator 18. When the psychosomatic state index F (t) is less than the optimum threshold F8, a scent generation signal is generated and supplied to the scent generation device 19. When the psychosomatic state index F (t) is greater than or equal to the optimum threshold F8 and less than the optimum threshold F7, the environment control unit 17 does not generate either the negative ion generation signal or the scent generation signal.

The negative ion generator 18 generates negative ions inside the vehicle when the negative ion generation signal is supplied from the environment control unit 17, and stops the generation of negative ions when the negative ion generation signal is not supplied. To do. In addition, the scent generating device 19 includes the environment control unit 1
When the scent generation signal is supplied from 7, the lemon scent is generated inside the vehicle, and when the scent generation signal is not supplied, the generation of the lemon scent is stopped.

FIG. 17 (A) is a diagram showing a temporal change of the worker's tension Sd (t) estimated by the psychosomatic state estimating section 13,
(B) is the optimal tension S estimated by the work situation estimation unit 16
The figure which shows the time-dependent change of o (t), (C) is environment control section 17
FIG. 7 is a diagram showing a change with time of the psychosomatic state index F (t) calculated in FIG. 4, (D) is a diagram showing an operating state of the negative ion generator 18, and (E) is a diagram showing an operating state of the scent generator 19. .

The operator's tension Sd (t) is as shown in FIG. 9 (A), and the optimum tension So (t) is as shown in FIG.
Then, the psychosomatic state index F (t) becomes equal to or more than the optimum threshold value F7 at times t1 to t2, as shown in FIG. Further, the psychosomatic state index F (t) is calculated from time t2 to t3.
In, the value becomes equal to or more than the optimum threshold F8 and less than the optimum threshold F7. Furthermore, the psychosomatic state index F (t) is calculated from the time t3 to t.
In 4, the value became less than the optimum threshold F8.

As a result, the negative ion generator 8 is
As shown in FIG. 3D, negative ions were generated at times t1 to t2. The scent generator 9 is shown in FIG.
As shown in, the lemon scent was generated from time t3 to time t4.

As described above, the psychosomatic state maintaining apparatus according to the fifth embodiment is a psychosomatic state index F (t) indicating the current worker tension Sd (t) with respect to the optimum tension So (t).
It is possible to determine whether or not the worker has the degree of tension according to the work situation by calculating the psychosomatic state index F (t) and the optimum threshold F7 and the optimum threshold F8.

When the psychosomatic state index F (t) exceeds the optimum threshold value F7, an excessive tension of the worker can be relieved by generating negative ions. Further, when the mind-body condition index F (t) is less than the optimum threshold F8, the mind and body of the worker can be activated and the distraction can be prevented by generating the scent of lemon.

Then, the psychosomatic state maintaining device repeats such processing to keep the psychosomatic state index F (t) at or above the optimum threshold value F8 and below the optimum threshold value F7 so that the operator can obtain the optimum value according to the work situation. You can maintain a sense of tension.

In the present embodiment, the work situation estimating unit 16 estimates the optimum tension So (t) according to the work situation, but the present invention is not limited to this. For example, the degree of tension indicating a state in which the degree of relaxation is slightly relaxed or slightly higher than the optimal degree of tension So (t) may be estimated.

[Sixth Embodiment] Next, a sixth embodiment will be described. The same parts as those in the fifth embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

The mental and physical condition maintenance device according to the present embodiment is
The configuration is almost the same as that of the fifth embodiment. In addition,
The mind-body database 12 uses the optimum threshold value F9 and the optimum threshold value F1 used when estimating the worker tension Sd (t).
Remember 0.

FIG. 18 is a general electrocardiogram. As shown in the figure, the electrocardiogram includes a Q wave, an R wave, an S wave, and a T wave, and the R wave is used here. Mental and physical condition estimation unit 13
The RR interval is sequentially obtained from the heartbeat (R wave) detected by the mind-body information detection unit 11, and spectrum analysis of the RR interval is performed.

FIG. 19 (A) is a diagram showing a change with time of the RR interval, and FIG. 19 (B) is a diagram showing a power spectrum density of the RR interval. As shown in FIG. 7B, the low frequency band LF (0.07 to
0.15 Hz) and high frequency band HF (0.15 to 0.4
0 Hz) appears. Then, the physical and mental condition estimation unit 13 integrates the high frequency band HF to obtain the heartbeat fluctuation high frequency component.

Next, the psychosomatic state estimating unit 13 determines whether the high-frequency component of heartbeat fluctuation is within ± σ of the average value Z.
Here, the average value Z is the average value of the high-frequency component of heartbeat fluctuation when the worker has a moderate tension.
The average values Z and σ are preset values.

FIG. 20 is a diagram showing a change with time of the high-frequency component of heartbeat variability. Heart rate variability high frequency component is the optimum threshold F9
In the case of (= Z + σ) or more, the heart rate variability is large and the operator's tension is low. On the contrary, when the high-frequency component of heartbeat fluctuation is less than the optimum threshold F10 (= Z−σ), the heartbeat fluctuation is small and the operator's tension is high.

Therefore, when the heart and body state estimating unit 13 determines that the heartbeat fluctuation high frequency component is equal to or higher than the optimum threshold value F9, the operator tension Sd (t) is set to a small value, and the heartbeat fluctuation high frequency component is less than the optimum threshold value F10. When it is determined that the operator tension is Sd (t), the operator tension Sd (t) is increased. Also,
When it is determined that the high-frequency component of heartbeat fluctuation is equal to or higher than the optimum threshold value F10 and lower than the optimum threshold value F9, the worker tension Sd (t) is set to a medium value.

The environment control unit 17 determines whether or not the worker tension Sd (t) thus obtained and the current optimum tension So (t) estimated by the work situation estimation unit 16 are negative ions. Negative ions are generated in the generator 18 and lemon scent is generated in the scent generator 19.

As described above, the psychosomatic state maintaining apparatus according to the sixth embodiment estimates the worker tension Sd (t) based on the high-frequency component of heartbeat variability, and similarly to the first embodiment. It is possible to determine whether or not the worker has the degree of tension according to the work situation. Then, by relieving excessive tension of the worker or activating the mind and body of the worker to prevent distraction, the worker can maintain an optimal sense of tension according to the work situation.

The present invention is not limited to the above-mentioned embodiment, but can be carried out as follows. For example, the optimum threshold value F9 and the optimum threshold value F10 may be fixed values or different values depending on the operator.

In the present embodiment, the worker tension Sd (t) is estimated in three stages of large, medium and small, but the worker tension Sd (t) is estimated in four or more stages using many threshold values. It can also be estimated. Further, the worker tension Sd (t) may be estimated according to the difference between the predetermined frequency component of the vibration transmissibility and a predetermined reference value (for example, the average value Z).

[Other Embodiments] The present invention is not limited to the above-described embodiments, but various design modifications are made as follows within the scope of the claims. It is possible.

(Other Configurations of the Mind and Body Information Detecting Units 1 and 11) In addition to the above, the mind and body information detecting unit includes accelerator amount, brake amount, skin potential, skin electric resistance, blink, body acceleration, body pressure ( At least one of the pressure between the driver and the back seat) may be detected. At this time, the psychosomatic state estimation units 3 and 13 set the driver tension Sd (t) as follows.

The skin potential and skin electric resistance indicate the degree of awakening of the driver or the worker. Therefore, based on the skin potential and the electric resistance of the skin, the degree of tension Sd (t) is increased when the driver or the worker is awake, and the degree of tension Sd (t) is decreased when the driver or the worker is not very awake.

The blinks indicate the degree of drowsiness of the driver or worker, and the higher the frequency, the drowsiness. Therefore,
The driver's tension Sd increases as the blink frequency increases.
Reduce (t).

The body acceleration indicates the degree of hardness of the body of the driver or the worker. For example, the body becomes softer as the body acceleration increases, and the body becomes harder as the body acceleration becomes smaller. Also, the harder the body, the more usually it is tense. Therefore, as the body acceleration increases, the driver's tension Sd (t) decreases.

The body pressure is the pressure applied to the back seat by the driver or the worker, and increases as the tension increases. Therefore, the driver's tension Sd (t) is increased as the body pressure increases.

(Other Configuration of Driving Environment Detection Unit 4) The driving environment detection unit 4 includes, in addition to the above-mentioned components, external environment (road type, traffic volume, weather, illuminance), vehicle state (steering angular velocity, inter-vehicle distance, At least one of the vehicle interior temperature, the vehicle interior humidity) and time information (driving time, device operation duration, time) may be detected. At this time, the driving situation estimation unit 6 sets the optimum tension So (t) as follows.

For example, regarding the external environment, as the type of road becomes highway, national road, prefectural road, etc., the optimum tension S
Reduce o (t). Further, as the traffic volume increases, the optimal tension So (t) is increased. Sunny, cloudy,
The optimum tension So (t) is increased as the weather becomes bad such as rain, snow, typhoon, and snowstorm. The optimum tension So (t) is increased as the illuminance decreases.

Regarding the vehicle state, the optimum tension So (t) is increased as the steering angular velocity increases. The optimal tension So (t) is increased as the inter-vehicle distance decreases. The optimum tension So (t) is increased as the difference between the vehicle interior temperature and the vehicle interior humidity and a predetermined reference value (for example, 25 ° C., 50%) increases.

Regarding the time information, the optimum tension So (t) is reduced as the operating time and the device operating time increase. At a predetermined time (for example, 1:00 pm immediately after lunch), the optimum tension So (t) is reduced.

(Other Configurations of Work Environment Detection Unit 14) The work environment detection unit 14 includes the work environment (weather, illuminance, room temperature, room humidity), work state (degree of difficulty,
Progress), time information (working time, device operation duration,
At least one of (time) may be detected. At this time, the work status estimation unit 16 sets the optimum tension So (t) as follows.

For example, regarding the external environment, it is fine, cloudy,
The optimum tension So (t) is increased as the weather becomes bad such as rain, snow, typhoon, and snowstorm. The optimum tension So (t) is increased as the illuminance decreases. Vehicle interior temperature and vehicle interior humidity and a predetermined reference value (for example, 25 ° C,
50%), the greater the difference, the optimal tension So
Increase (t).

As for the work state, the optimum tension So (t) is increased as the difficulty level of the work increases. As work progresses worse, optimal tension So
Increase (t).

Regarding the time information, the optimum tension So (t) is reduced as the working time and the apparatus operating time increase. At a predetermined time (for example, 1:00 pm immediately after lunch), the optimum tension So (t) is reduced.

(Driving Environment / Working Environment) In the first to sixth embodiments, the psychosomatic state maintaining device generates negative ions or changes the environment of the driver or the worker to generate lemon scent. However, the present invention is not limited to this. If the effect of generating negative ions or lemon scent is weak, sound the driver, vibrate the driver or the worker or a predetermined member, or generate other scents, and May be further stimulated.

Further, it is not limited to the case where both the negative ion generators 8 and 18 and the scent generators 9 and 19 are provided, and only one of them may be provided.

As described above, the psychosomatic state maintenance device estimates the psychosomatic state and the driving situation of the driver, and adjusts the driver's environment so that the psychosomatic state corresponds to the driving situation. It relieves tension when it becomes tense and activates it when it becomes distracted. As a result, the driver can maintain a proper sense of tension according to the driving situation, and the driving can be performed safely and smoothly. Also, the same effect can be obtained when the worker performs a predetermined work.

[0129]

The psychosomatic state maintaining device according to the present invention estimates the reference psychosomatic state corresponding to the current driving situation or work state based on the environmental information, and the environment based on the present psychosomatic state and the reference psychosomatic state. If you are overly tense, you can relax the tension and reduce fatigue from driving, and if you are distracted, activate your mental and physical condition to increase the tension and You can maintain a sense of tension.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a psychosomatic state maintenance device according to a first embodiment.

FIG. 2 is a diagram showing an example of a head vibration-tension degree map.

FIG. 3 is a diagram showing an example of a vehicle state map.

FIG. 4A is a diagram showing changes over time of the driver's tension Sd (t), FIG. 4B is a diagram showing changes over time of the optimal tension So (t), and FIG. 4C is a psychosomatic state index F ( FIG. 4D is a diagram showing a change with time of t), FIG. 4D is a diagram showing an operating state of the negative ion generator, and FIG. 3E is a diagram showing an operating state of the scent generator.

FIG. 5 is a block diagram showing a configuration of a psychosomatic state maintenance device according to a second embodiment.

FIG. 6A is a diagram showing a time-dependent change in driver's tension Sd (t), FIG. 6B is a diagram showing a time-dependent change in optimal tone So (t), and FIG. 6C is a psychosomatic state index F ( FIG. 4D is a diagram showing a change with time of t), FIG. 4D is a diagram showing an operating state of the negative ion generator, and FIG. 3E is a diagram showing an operating state of the scent generator.

FIG. 7 is a diagram showing a change over time in a steering angle detected by a mind-body information detection unit in the third embodiment.

FIG. 8 is a diagram showing a power spectrum density of a steering angle.

FIG. 9 is a diagram showing a change with time of a band component in a steering angle of 0.15 to 0.50 [Hz].

FIG. 10 (A) is a diagram showing a temporal change of the head vibration level, and (B) is a power spectrum density H of the head vibration level.
It is a figure which shows ead_z.

FIG. 11 (A) is a diagram showing changes in seat vibration level over time, and FIG. 11 (B) is a power spectrum density S of seat vibration level.
It is a figure which shows eat_z.

FIG. 12 is a diagram showing a vibration transmissibility.

FIG. 13 is a diagram showing a change with time of a band component in a vibration transmissibility of 5.0 to 5.5 [Hz].

FIG. 14 is a block diagram showing a configuration of a psychosomatic state maintenance device according to a fifth embodiment.

FIG. 15 is a diagram showing an example of a heart rate variability-tension degree map.

FIG. 16 is a diagram showing an example of a difficulty level-tension level map.

FIG. 17 (A) is a diagram showing a time-dependent change in worker tension Sd (t), FIG. 17 (B) is a diagram showing a time-dependent change in optimal tone So (t), and FIG. 17 (C) is a psychosomatic state index F ( FIG. 4D is a diagram showing a change with time of t), FIG. 4D is a diagram showing an operating state of the negative ion generator, and FIG. 3E is a diagram showing an operating state of the scent generator.

FIG. 18 is a general electrocardiogram.

FIG. 19 (A) is a diagram showing a time-dependent change in RR interval;
(B) is a figure which shows the power spectrum density of RR interval.

FIG. 20 is a diagram showing a temporal change of a high-frequency component of heartbeat fluctuation.

[Explanation of symbols]

1,11 Mental and physical information detector 2,12 Mind-body database 3,13 Mental and physical condition estimation section 4 Driving environment detector 5,15 Environmental database 6 Driving situation estimation section 7,17 Environmental control section 8,18 negative ion generator 9,19 Scent generator 10 Generation pattern control unit 14 Working environment detector 16 Work situation estimation section

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Ichiro Tajima             Aichi Prefecture Nagachite Town Aichi District             Ground 1 Toyota Central Research Institute Co., Ltd. F-term (reference) 3D037 FA01

Claims (4)

[Claims] 1. A mind-body information detecting means for detecting the mind-body information of the driver, a mind-body state estimating means for estimating a mind-body state of the driver based on the mind-body information detected by the mind-body information detecting means, and the driving. Environmental information detecting means for detecting the environmental information of the person, based on the environmental information detected by the environmental information detecting means, a reference mind-body state estimating means for estimating a reference mind-body state corresponding to the current driving situation, the mind-body A psychosomatic state maintaining device comprising: an environment adjusting means for adjusting the environment of the driver based on the current psychosomatic state estimated by the state estimating means and the reference psychosomatic state estimated by the reference psychosomatic state estimating means. . 2. A mind-body information detecting means for detecting a mind-body information of the worker, a mind-body state estimating means for estimating a mind-body state of the worker based on the mind-body information detected by the mind-body information detecting means, and the work. Environmental information detecting means for detecting the environmental information of the person, based on the environmental information detected by the environmental information detecting means, a reference mind and body state estimating means for estimating a reference mind and body state corresponding to the current work situation, the mind and body A psychosomatic state maintaining device comprising: an environment adjusting means for adjusting the environment of the worker based on the current psychosomatic state estimated by the state estimating means and the reference psychosomatic state estimated by the reference psychosomatic state estimating means. . 3. The psychosomatic state maintaining apparatus according to claim 1, wherein the environment adjusting means adjusts the environment so that the current psychosomatic state matches the reference psychosomatic state. 4. The environment adjusting means is a negative ion,
4. The psychosomatic state maintaining device according to claim 1, wherein at least one of scent, sound, vibration, air having a predetermined temperature, and air having a predetermined humidity is output to adjust the environment.