JP2003228276A - Progress degree judging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stepwise output degree of progress with a device for judging progress in driving. <P>SOLUTION: The device for judging the degree of progress in driving is provided with a database for correspondingly storing a plurality of progress degrees and the change rate of vehicle state amount for identifying each degree of progress, a detecting means to detect the vehicle state amount, a vehicle state amount change rate calculating means for calculating the change rate of the vehicle state amount detected by the detecting means during a prescribed period, a specific vehicle state amount change rate calculating means for calculating the change rate of specific vehicle state amount based on the change rate of the vehicle state amount calculated by the vehicle state amount change rate calculating means and the change rate of the vehicle state amount calculated in the past, a progress degree acquisition means for acquiring, out of the database, the progress degree corresponding with the change rate of the specific vehicle state amount calculated by the specific vehicle state amount change rate calculating means, and an output means for outputting, as a judged progress degree, the acquired progress degree acquired by the progress degree acquisition means. <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 device for determining the degree of improvement in driving.

[0002]

2. Description of the Related Art Conventionally, various systems for judging the degree of improvement in driving have been proposed (Japanese Patent Laid-Open No. 2000-17).
1388 publication). The system described in the publication detects a detected value that changes according to the driving motion of the driver, compares the detected value with a reference value to determine the adequacy of the driving motion, and then determines the determined validity. Inform the user of sex. By doing so, it is intended to be able to objectively recognize whether or not one's own driving motion is appropriate.

[0003]

However, since the system described in the above publication makes it possible to recognize whether or not the system has relevance, this is used for judging the degree of improvement in driving. Even if it is used, there is a problem that it is not possible to know the degree of improvement step by step (that is, the problem that only the fact that the standard value is exceeded or the standard value is below is known) is used.

In addition, when judging the degree of improvement in driving, there is a demand for the driver to intentionally drive.
For example, there is a case where the degree of improvement cannot be properly determined depending on the road surface condition, and thus there is a demand for determination of the degree of improvement on a road other than such a road surface section.

A first object of the present invention is to output the progress in steps in an apparatus for determining the progress of operation. A second object of the present invention is to set a device for judging the degree of improvement in driving as a target for judging the degree of improvement in driving which the driver intends.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is a device for determining the progress of driving, and a vehicle state for specifying a plurality of progresses and each progress. A database that stores the rate of change in quantity in association with each other,
Detecting means for detecting a vehicle state quantity, vehicle state quantity change rate calculating means for calculating a change rate of the vehicle state quantity detected within a predetermined period by the detecting means, and the vehicle state quantity change rate calculating means Specific vehicle state quantity change rate calculating means for calculating the change rate of the specific vehicle state quantity based on the change rate of the vehicle state quantity and the change rate of the vehicle state quantity calculated in the past, and the specific vehicle state quantity A progress degree acquisition means for obtaining from the database the progress degree associated with the change rate of the specific vehicle state quantity calculated by the change rate calculation means, and the progress degree acquired by the progress degree acquisition means are determined. The output means for outputting the degree of improvement is provided.

According to the present invention, since a database for storing a plurality of improvement levels and a change rate of the vehicle state quantity for specifying each improvement level in association with each other is stored, an apparatus for determining the driving improvement level. In, it is possible to output the degree of improvement step by step.

In order to solve the above-mentioned problems, the present invention is a device for judging the degree of improvement in driving, which comprises a judgment start determining means for deciding the judgment start and a judgment end decision for deciding the judgment end. And a determination unit that determines the degree of improvement in driving from the determination of the determination start by the determination start determination unit to the determination of the determination end by the determination end determination unit.

According to the present invention, in the device for determining the degree of improvement in driving, it is possible to make the driver's intentional driving the subject of determination of the degree of improvement. Examples of the determination start determining means for determining the determination start include turning on a determination start switch operated by a driver or the like, or detecting that the vehicle current position detection means has detected a start of a predetermined start position or a predetermined road section. And so on. Examples of the determination end determination means for determining the determination end include that a determination end switch operated by a driver or the like is turned on, or the vehicle current position detection means detects that the predetermined end position or the predetermined road section has ended. And so on.

In the above-mentioned improvement degree judging device, for example, a detecting means for detecting a vehicle state quantity is provided, and the judgment start determining means has a predetermined threshold value for the vehicle state quantity detected by the detecting means. When it exceeds, the judgment start is decided. By doing so, it becomes possible to automatically make the driver's intentional driving the determination of the degree of improvement without the need for the driver's hand or the like.

In the above-mentioned improvement degree determining device, for example, the determination end determining means determines the determination end when the vehicle state quantity detected by the detecting means exceeds a predetermined threshold value. By doing so, it becomes possible to automatically make the driver's intentional driving the determination of the degree of improvement without the need for the driver's hand or the like.

The above-described improvement degree determining device further includes, for example, output means for outputting the improvement degree determined by the determining means. This makes it possible to notify the driver of the determination result.

The output means displays, for example, a display showing the degree of improvement as the degree of improvement. Further, the output means may output a voice indicating the improvement level as the improvement level.

In the above-mentioned improvement degree determining device, for example, a database for storing a plurality of improvement degrees and a change rate of the vehicle state quantity for specifying each improvement degree in association with each other, and the detection means for starting the determination. Vehicle state quantity change rate calculating means for calculating the change rate of the vehicle state quantity detected between the determination of the determination start by the determination means and the determination of the determination end by the determination end determination means, and the vehicle state quantity change rate calculation Specific vehicle state quantity change rate calculating means for calculating a change rate of the specific vehicle state quantity based on the change rate of the vehicle state quantity calculated by the means and the change rate of the vehicle state quantity calculated in the past; Further comprising an improvement degree acquisition means for acquiring, from the database, an improvement degree associated with the change rate of the specific vehicle state quantity calculated by the specific vehicle state quantity change rate calculation means, Serial determination means outputs a proficiency which is determined proficiency acquired by the proficiency acquisition means.

According to this configuration, the database for storing the plurality of progresses and the rate of change of the vehicle state quantity for identifying the respective progresses in association with each other is provided, so that the device for determining the progress of the driving is provided. In, it is possible to output the degree of improvement step by step.

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic system configuration diagram of an improvement degree determination device according to a first embodiment of the present invention.

The improvement degree determining device 100 mainly includes an ECU (Ele) that includes a CPU that controls the entire operation thereof, a ROM that stores a predetermined program, and a storage unit such as a RAM.
ctronic Control Unit). The improvement degree determination device 100 includes a vehicle state quantity detection means 101, a determination start determination means 102, and a vehicle state quantity change rate calculation means 10.
3, determination end determination means 104, vehicle state quantity change rate extraction means 105, vehicle state quantity change rate recording means 106, average value calculation means 107, improvement degree determination means 108, improvement degree determination database 109, output means 110, vehicle state Quantity change rate storage unit 111 and past vehicle state quantity change rate recording unit 112
And so on.

The vehicle state quantity detecting means 101 is a sensor for detecting the vehicle state quantity, and is, for example, an acceleration sensor or a speed sensor. The vehicle state quantity detecting means 101 is attached to a predetermined portion of the vehicle. When the vehicle state quantity detecting means 100 is an acceleration sensor, longitudinal acceleration and lateral acceleration are detected as the vehicle state quantity. The left and right views in the lower part of FIG. 7 are graph display examples of longitudinal acceleration detected within a predetermined period. This figure shows a comparative example at the time of deceleration operation of an advanced driver and a beginner driver in the same stop section constrained by the surrounding traffic conditions. Vehicle state quantity detecting means 100
Is a speed sensor, the vehicle speed is detected as the vehicle state quantity.

The determination start determining means 102 is for determining whether or not to start the determination of the degree of improvement, and is realized by, for example, the CPU executing a predetermined program stored in the ROM or the like. For example, the determination start determining means 102 compares the vehicle state quantity detected by the vehicle state quantity detecting means 101 with a predetermined threshold value (determination start threshold value), and based on the comparison result,
It is determined whether or not to start the determination of the degree of improvement. Specifically, the determination start determining means 102 determines to start the determination of the degree of improvement when the detected vehicle state quantity exceeds a predetermined threshold value as a result of the comparison.

The vehicle state quantity change rate calculating means 103 is for calculating the change rate of the vehicle state quantity detected by the vehicle state quantity detecting means 101. For example, the CPU has a predetermined program stored in a ROM or the like. It is realized by executing. Vehicle state quantity change rate calculation means 103
Is the change rate of the vehicle state quantity detected by the vehicle state detection means 101 within a predetermined period (for example, from the determination of the determination start by the determination start determination means 102 to the determination of the determination end by the determination end determination means 104). It is calculated by using a differential operation. The left and right figures in the upper part of FIG. 7 are graph display examples of results obtained by calculating the change rate of the longitudinal acceleration (left and right figures in the lower part of the figure) detected within a predetermined period by using a differential operation. From this figure, there is a feature that there are peak values in the early (depressed) and late (extracted) parts of the operation, and smoothness = difference in size (the part surrounded by the circle in the upper part of the figure) may appear. I understand. It is possible to detect the degree of improvement by extracting this, processing it, and using it. Also, not only deceleration, but acceleration,
Similar differences appear when turning or changing lanes.

The change rate of the vehicle state quantity calculated by the vehicle state quantity change rate calculating means 103 is written (stored) in the vehicle state quantity change rate storage unit 111. The vehicle start change rate storage unit 111 stores the determination start determining unit 102.
The change rate of the vehicle state amount from the determination of the determination start by the determination end determination unit 104 to the determination of the determination end determination unit 104 is written.

The determination end determining means 104 is for determining whether or not to finish the determination of the degree of improvement, and is realized by, for example, the CPU executing a predetermined program stored in the ROM or the like. For example, the determination end determination unit 104 compares the vehicle state amount detected by the vehicle state amount detection unit 101 with a predetermined threshold value (determination end threshold value), and based on the comparison result,
It is determined whether or not the determination of the degree of improvement is completed.

Specifically, the determination end determining means 104 is
As a result of the comparison, when the detected vehicle state quantity exceeds a predetermined threshold value, it is determined to end the improvement degree determination. The threshold value used by the determination end determination means 104 (determination end threshold value) is the determination start determination means 102.
It may be the same as or different from the threshold value (determination start threshold value) used by.

The vehicle state quantity change rate extraction means 105 is for extracting the maximum value and the minimum value of the change rate of the vehicle state quantity from the vehicle state quantity change rate storage unit 111.
It is realized by the CPU executing a predetermined program stored in the ROM or the like.

The vehicle state quantity change rate recording means 106 is for writing (recording) the maximum value and the minimum value extracted by the vehicle state quantity change rate extracting means 105 in the past vehicle state quantity change rate recording section 112. Yes, for example, it is realized by the CPU executing a predetermined program.

The vehicle state quantity change rate recording means 106 writes, for example, the maximum value and the minimum value extracted by the vehicle state quantity change rate extraction means 105 in association with the date and time. As the date and time to be associated, there is a date and time when the determination start determining unit 102 starts the determination. The maximum value and the minimum value of the change rate of the vehicle state amount from the past to the present time are sequentially written (stored) in the past vehicle state amount change rate storage unit 112. FIG. 8 is a line graph L in which the maximum value (or the minimum value) of the change rate of the vehicle state on a certain day is connected by a line.
It is represented as 1 and L2. The graph L1 shows the change rate of the beginner driver, and the graph L2 shows the change rate of the advanced driver. Also, the chain line L1 ′ is the graph L
1 shows the average value of the rate of change constituting 1 and is indicated by a chain line L2 ′
Indicates the average value of the rate of change forming the graph L2.

The average value calculating means 107 is for calculating the average value of the maximum value and the minimum value written in the past vehicle state quantity change rate recording section 112, and for example, the CPU executes a predetermined program. It is realized by. The average value calculated by the average value calculation means 107 corresponds to the change rate of the specific vehicle state quantity.

The improvement degree determination means 108 is for determining the improvement degree, and is realized by, for example, the CPU executing a predetermined program. Ability determination means 10
8 determines the degree of improvement in driving for a predetermined period. The operation for a predetermined period is an operation for which the degree of improvement is to be determined,
For example, it is the operation from the determination of the determination start by the determination start determination means 102 to the determination of the determination end by the determination end determination means 104.

The improvement degree determining means 108 is, for example, an average value (change rate of a specific vehicle state quantity) calculated by the average value calculating means 107 and a change rate of vehicle state quantities stored in the improvement degree determination database 109. Compare with 109b. Then, the improvement degree determination means 108 acquires (reads out) the improvement degree associated with the average value (that is, the change rate 109b of the vehicle state amount satisfying the average value) from the improvement degree determination database 109.

The improvement degree determination database 109 stores a plurality of improvement degrees 109a and a change rate 109b of the vehicle state quantity for specifying each improvement degree 109a in association with each other. The correspondence relationship is, for example, a database format (for example,
Relational database) or in the form of files (eg text files).

The improvement level 109a may be a symbol, a number, a sentence, an image, or a combination thereof. If the degree of improvement is indicated by a symbol (or number), "A", "B",
It is possible to express it as "C" ... ("1", "2", "3", ...). When showing the degree of improvement in sentences, it may be possible to express such things as "I have improved,""I still have a lot,""Let's do my best." In the case of showing the degree of improvement in an image, it may be expressed as face image 1, face image 2, face image 3 ...

As the change rate 109b of the vehicle state quantity for specifying the degree of improvement, the average value (change rate of the specific vehicle state quantity) = a calculated by the average value calculation means 107 = a Change rate = b ..., c <change rate of specific vehicle state quantity <d ..., etc. (a to d.
・ ・ Is an arbitrary value.

The output means 110 is for outputting the improvement degree acquired from the improvement degree determination database 109 as the determined improvement degree. That is, the output means 110
Outputs the degree of improvement determined by the degree of improvement determination means 108. The output unit 110 is, for example, an image display device such as a liquid crystal display or a CRT display, or an audio output device including a speaker. When the output unit 110 is an image display device, a display indicating the improvement level is displayed on the image display device as the improvement level. When the output unit 110 is a voice output device, a voice indicating the improvement level is output from the speaker as the improvement level.

Next, the operation of the above-described improvement level determination device will be described with reference to the drawings. FIG. 2 is a flow chart for explaining the operation of the improvement degree determination device.

The improvement degree determining device 100 is activated by turning on an ignition switch of the vehicle. When the ignition switch is turned on, the determination start determining means 102 reads the vehicle state quantity sequentially detected by the vehicle state quantity detecting means 101 (S100). In the following description, the longitudinal acceleration G (the lateral acceleration and the vehicle speed are also the same as in the case of the longitudinal acceleration, so the description thereof is omitted) is read as the vehicle state quantity.

The judgment start determining means 102 compares the read vehicle state quantity with a predetermined threshold value (judgment start threshold value) (S101), and based on the result of the comparison, determines the degree of improvement. Decide whether to start the judgment. As a result of the comparison, when the read vehicle state quantity exceeds the predetermined threshold value (S101: Yes), it is determined to start the determination of the improvement degree (for example, the determination start flag is set to ON). ).

As described above, when the judgment start threshold value is exceeded, it is assumed that the driver (user) has the intention of accelerating, decelerating, or steering, and unnecessary disturbance that should not be used for judgment,
It becomes possible to eliminate intentional operations. That is, the driver's intentional driving can be targeted for the determination of the degree of improvement.

When it is determined to start the determination of the degree of improvement, the vehicle state quantity change rate calculation means 103 causes the vehicle state detection means 10 to operate.
The change rate of the vehicle state quantity detected by 1 is calculated (S102). The rate of change of the calculated vehicle state quantity is
It is written in the vehicle state quantity change rate storage unit 111.

When the determination of the degree of improvement is started, the determination end determining means 104 determines the vehicle state quantity sequentially detected by the vehicle state quantity detecting means 101 and a predetermined threshold value (determination end threshold value). Are compared (S103). The determination end determining means 104 determines whether or not to end the determination of the improvement degree, based on the result of the comparison. As a result of the comparison, when the vehicle state amount exceeds (falls below) a predetermined threshold value (S103: Yes), it is determined that acceleration, deceleration, and steering have ended, and the determination of the degree of improvement is ended. Determine (for example, set the determination start flag to OFF).

When the end of the determination of the degree of improvement is determined, the vehicle state quantity change rate extraction unit 105 determines the maximum value and the minimum value of the rate of change from the vehicle state quantity change rate storage unit 111 to determine the degree of improvement (smoothness). Extract as a parameter. The maximum value and the minimum value extracted this time are the vehicle state quantity change rate recording means 1
According to 06, it is written in the past vehicle state quantity change rate recording unit 112 together with the date and time (S104).

When the maximum value and the minimum value are written, the average value calculation means 107 causes the past vehicle state quantity change rate recording unit 11 to
The average value of the maximum value and the minimum value written in 2 (including the maximum value and the minimum value written this time) is calculated and used as the driver's improvement degree substitute value (S105).

Next, the improvement degree judging means 108 compares the calculated average value (change rate of the specific vehicle state quantity) with the change rate 109b of the vehicle state quantity stored in the improvement degree judgment database 109. Then, the improvement degree determination database 10 determines the improvement degree 109a associated with the average value (that is, the change rate 109b of the vehicle state amount satisfying the average value).
9 is acquired (S106).

The obtained improvement level 109a is output from the output means 110 as the determined improvement level (S1).
07). For example, the improvement level 109a is displayed on the image display device. The improvement level 109a may be output from the audio output device together with the display thereof or alone. Output the progress 109a to the server outside the vehicle via the communication device (upload)
However, the ranking may be disclosed to the information terminal that has accessed the server via the Internet.

Further, if the degree of progress judged by the degree-of-advancement judging means 108 is stored in a predetermined database inside or outside the vehicle, a ranking display in which the driver is ranked and a display classified according to the ranking are displayed. It is possible to do. When a predetermined database is provided on the vehicle, real-time determination is possible. Further, when the predetermined database is provided outside the vehicle (for example, a center or a server), there is an advantage that data collection and database updating are easy.

Further, the degree of progress of each vehicle is acquired, and the identification information (name, nickname, etc.) of the driver of each vehicle is stored together with a predetermined database (for example, provided in the center, and each vehicle is passed through a network such as the Internet). It is stored in a database that can be accessed at
It is possible to display rankings ranked by name. It is also possible to display the images classified into classes based on the display.

In the above-described first embodiment, the improvement degree determination database 109 stores a plurality of improvement degrees and the vehicle state quantity change rate 109b for identifying each improvement degree in association with each other. There is. Therefore, if different average values are calculated in S105, different progress levels will be output. Therefore, it is possible to judge and output the degree of progress stepwise.

Further, in the first embodiment,
Although the achievement determination database 109 is provided in the vehicle in the above description, the installation location of the achievement determination database 109 is not limited to this. For example, the improvement degree determination database 109 may be provided outside the vehicle such as a center. in this case,
The vehicle is provided with a communication device such as a mobile phone, and the vehicle accesses the achievement degree determination database 109 via the communication device.

Further, in the first embodiment described above,
Although the average value calculation means 107 has been described as calculating the average value of each of the maximum value and the minimum value, the average value may be calculated for the sum of the maximum value and the minimum value.

Further, in the first embodiment described above,
The average value calculated by the average value calculation means 107 may be defined individually for acceleration, deceleration, and steering, or may be the average value of all of them. Further, the time interval of the past data can be changed and set long when the reliability is increased and short when the recent improvement is obtained.

Next, a modification of the first embodiment will be described. In order to perform a smooth operation, it is necessary to have experience such as read-ahead, recognition of traffic conditions, judgment, and obtaining an expected vehicle response. As a result, smooth and stable operation is possible.

Therefore, in the above-mentioned improvement degree judging device, S
By adding a parameter (for example, 3σ) indicating the variation of the operation, a database thereof, and a determination means between 106 and S107, the “determination element for determining the direction in which the operation is stable as the improvement direction” is determined. You can also add. The weighting with the above-mentioned judgment element is provided with a parameter so that it can be set according to the manufacturer's idea. Other data such as acceleration (a value that is not a differential value) can also be applied to this method.

Next, a second embodiment of the invention, an improvement degree determining device, will be described with reference to the drawings. The schematic system configuration diagram of the progress determination device of the present embodiment is almost the same as that shown in FIG. 1, but the following (1) to (3) are different. (1) Vehicle state quantity change rate storage unit 11
In item 1, incidental information is written together with the rate of change of the vehicle state quantity.

(2) Past vehicle state quantity change rate recording section 112
In addition, incidental information is written together with the maximum value and the minimum value extracted by the vehicle state quantity change rate extraction means 105. (3) The improvement level determination database 109 stores a plurality of improvement levels 109a, a change rate of the vehicle state quantity for specifying each improvement level, and a condition 109b related to the incidental information in association with each other (FIG. 3). reference).

As the supplementary information, vehicle speed, vehicle position, classification of acceleration / deceleration / steering, etc. can be considered. When the incidental information is the vehicle position, it is necessary to mount vehicle current position detecting means such as a GPS receiver on the vehicle. Since other configurations are similar to those shown in FIG. 1, the same reference numerals as those in FIG. 1 are used in the following description.

Next, the operation of the above-structured achievement level determination device will be described with reference to the drawings. FIG. 4 is a flowchart for explaining the operation of the improvement degree determination device according to the second embodiment.

The improvement degree determining device 100 is activated by turning on an ignition switch of the vehicle. When the ignition switch is turned on, the determination start determining means 102 reads the vehicle state quantity sequentially detected by the vehicle state quantity detecting means 101 (S200). In the following description, the longitudinal acceleration G (the lateral acceleration is also the same as the case of the longitudinal acceleration and therefore the description thereof is omitted) is read as the vehicle state quantity, and the vehicle speed V (vehicle position, acceleration / deceleration / steering) is read as additional information. The description is omitted for the classification of () because it is the same as the case of the vehicle speed).

The judgment start determining means 102 compares the read vehicle state quantity with a predetermined threshold value (judgment start threshold value) (S201), and based on the result of the comparison, the improvement degree. Decide whether to start the judgment. As a result of the comparison, when the read vehicle state quantity exceeds the predetermined threshold value (S201: Yes), it is determined to start the determination of the improvement degree (for example, the determination start flag is set to ON). ).

As described above, when the judgment start threshold value is exceeded, it is assumed that the driver (user) has the intention of accelerating, decelerating, or steering, and unnecessary disturbance that should not be used for judgment,
It becomes possible to eliminate intentional operations. That is, the driver's intentional driving can be targeted for the determination of the degree of improvement.

When it is decided to start the determination of the degree of improvement, the vehicle state quantity change rate calculation means 103 causes the vehicle state detection means 10 to operate.
The change rate of the vehicle state quantity detected by 1 is calculated (S202). The rate of change of the calculated vehicle state quantity is
It is written in the vehicle state quantity change rate storage unit 111 together with the incidental information (that is, in association with the incidental information).

When the determination of the degree of improvement is started, the determination end determination means 104 determines the vehicle state quantity sequentially detected by the vehicle state quantity detection means 101 and a predetermined threshold value (determination end threshold value). Are compared (S203). The determination end determining means 104 determines whether or not to end the determination of the improvement degree, based on the result of the comparison. As a result of the comparison, when the vehicle state amount exceeds (falls below) a predetermined threshold value (S203: Yes), it is determined that acceleration, deceleration, and steering have ended, and the determination of the degree of improvement is ended. Determine (for example, set the determination start flag to OFF).

When it is determined to finish the determination of the degree of improvement, the vehicle state quantity change rate extraction means 105 determines the maximum value and the minimum value of the change rate from the vehicle state quantity change rate storage unit 111 to determine the degree of improvement (smoothness). Extract as a parameter. The maximum value and the minimum value extracted this time are the vehicle state quantity change rate recording means 1
According to 06, it is written in the past vehicle state quantity change rate recording unit 112 together with the date and time and incidental information (S204).

When the maximum value and the minimum value are written, the average value calculating means 107 causes the past vehicle state quantity change rate recording unit 11 to
The average value of the maximum value and the minimum value (including the maximum value and the minimum value written this time) written in 2 and associated with the additional information of this time is calculated, and the driver's progress is calculated. The substitute value is used (S205).

Next, the degree-of-improvement judging means 108 calculates the calculated average value (change rate of the specific vehicle state quantity), the additional condition of this time, and the degree-of-improvement specifying condition 109b stored in the degree-of-improvement judging database 109b. Are compared with each other, and the improvement level 109a associated with the average value and the incidental condition is acquired from the improvement level determination database 109 (S20).
6).

The obtained improvement level 109a is output from the output means 110 as the determined improvement level (S2).
07). For example, the improvement level 109a is displayed on the image display device. The improvement level 109a may be output from the audio output device together with the display thereof or alone. Output the progress 109a to the server outside the vehicle via the communication device (upload)
However, the ranking may be disclosed to the information terminal that has accessed the server via the Internet.

Next, an improvement degree determining device according to a third embodiment of the present invention will be described with reference to the drawings. FIG. 5 is a schematic system configuration diagram of the improvement degree determination device according to the third embodiment. The progress determination device of the present embodiment,
It is almost the same as that shown in FIG.
00 is included.

The external DB 200 is the personal data acquisition means 2
01, external DB addition means 202, new judgment value determination means 203, and new judgment value determination means 204.

The personal data acquisition means 201 is for accessing the improvement level determination device 100 via a network such as a mobile telephone network and for acquiring personal data from the improvement level determination device 100. For example, a modem, Communication devices such as terminal adapters and routers. In the present embodiment, the vehicle is also provided with the same communication device. The personal data includes the maximum value and the minimum value recorded in the past vehicle state quantity change rate recording unit 112.

The external DB adding means 202 stores the personal data acquired by the personal data acquiring means 201 in the external D
B (external database constructed on a storage device such as a hard disk), for example,
It is realized by the database server. The external DB adding means 202 stores the acquired personal data in the external DB in association with the user identification information.

The new judgment value determining means 203 is for determining a new judgment value based on the personal data stored in the external DB, and is realized, for example, by executing a predetermined program on the external DB 200 side. To be done.

The new determination value writing means 204 stores the achievement level specifying condition 10 stored in the progress level determination database 109.
9b is for rewriting the new judgment value determined by the new judgment value determining means 203, and is realized by executing a predetermined program. Since other configurations are similar to those shown in FIG. 1, the same reference numerals as those in FIG. 1 are used in the following description.

Next, the operation of the above-structured achievement determining device will be described with reference to the drawings. FIG. 6 is a flowchart for explaining the operation of the improvement degree determination device according to the third embodiment. The process shown in FIG.
00 is started by accessing the achievement level determination device 100 at a predetermined timing (or by the progress level determination device 100 accessing the external DB 200 at a predetermined timing).

The external DB 200 is the personal data acquisition means 2
By 01, the progress degree determination device 100 mounted on the specific vehicle is accessed to obtain personal data (maximum value and minimum value of change rate) from the past vehicle state quantity change rate recording unit 112 (S300). The acquired personal data is written in the external DB by the external DB adding unit 202.

The new judgment value determining means 203 has its external DB
A new determination value is determined based on the personal data stored in (S302). Specifically, the new judgment value is determined as follows.

First, an average value and a standard deviation are calculated from the maximum value and the minimum value of the change rate written in the external DB. Then, the average value calculated this time (hereinafter referred to as the new average value) and the previously calculated average value (hereinafter referred to as the old average value) are compared, and as a result, when it is determined that the average value has changed, the determination value Is generally offset by (new average value-old average value). On the other hand, the standard deviation calculated this time (hereinafter referred to as the new standard deviation) and the previously calculated standard deviation (hereinafter referred to as the old standard deviation) are compared, and if it is determined that the standard deviation has changed, each judgment Value range (new standard deviation /
(Old standard deviation)

When the new judgment value is determined in this way, the new judgment value writing means 204 causes the improvement degree judgment database 109.
The improvement degree specifying condition 109b stored in is updated with the new determination value determined by the new determination value determining means 203 (S303). As a result, the vehicle can determine the degree of improvement on the basis of the new new determination value.

The present invention can be implemented in various other forms without departing from the spirit or the main characteristics. Therefore, the above embodiments are merely examples in all respects, and should not be construed as restrictive.

As described above, according to the present invention,
The device for determining the degree of improvement in driving can output the degree of improvement in stages. Further, in the device for determining the degree of improvement, it is possible to make the driver's intentional driving a target for the determination of the degree of improvement.

In addition, since the driver (user) who uses this device is likely to aim for smooth driving in order to improve his / her progress, in addition to improving his / her progress, smooth traffic flow is also possible. It can also be expected to reduce vehicle damage and improve fuel efficiency, contributing to the development of a mobility society. Also, instead of forcing a bad operation,
It can be used to compliment good driving, which leads to driving fun and can be expected to have an educational effect.

[Brief description of drawings]

FIG. 1 is a schematic system configuration diagram of an improvement degree determination device according to a first embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the improvement level determination device according to the first embodiment of the present invention.

FIG. 3 is an example of an improvement level determination database used in the improvement level determination device according to the second embodiment of the present invention.

FIG. 4 is a flowchart for explaining the operation of the improvement level determination device according to the second embodiment of the present invention.

FIG. 5 is a schematic system configuration diagram of an improvement degree determination device according to a third embodiment of the present invention.

FIG. 6 is a flowchart for explaining the operation of the improvement level determination device according to the third embodiment of the present invention.

FIG. 7 is a graph display example of the longitudinal acceleration detected within a predetermined period in the first to third embodiments (bottom row), and the rate of change of the longitudinal acceleration detected within the predetermined period is calculated using a differential operation. It is an example of a graph display of the result calculated by.

FIG. 8 is a line graph display example in which a maximum value (or a minimum value) of a change rate of a vehicle state on a certain day is mainly connected by a line.

[Explanation of symbols]

100 Progression judging device 101 vehicle state quantity detecting means 102 determination start determining means 103 vehicle state quantity change rate calculation means 104 end determination means 105 vehicle state quantity change rate extraction means 106 vehicle state quantity change rate recording means 107 Mean value calculation means 108 Achievement Determining Means 109 Achievement judgment database 109a Progress 109b Change rate of vehicle state quantity 110 Output means 111 Vehicle State Quantity Change Rate Storage Unit 112 Past vehicle state quantity change rate recording unit 200 external DB 201 Personal data acquisition means 202 Addition method to external DB 203 New judgment value determining means 204 new judgment value writing means

Claims (8)

[Claims] 1. A device for determining a driving improvement level, which stores a plurality of improvement levels and a database for associating a change rate of a vehicle state quantity for specifying each improvement level in association with each other, and a vehicle state. Detection means for detecting the amount, vehicle state quantity change rate calculation means for calculating the change rate of the vehicle state quantity detected within a predetermined period by the detection means, and vehicle calculated by the vehicle state quantity change rate calculation means Based on the change rate of the state quantity and the change rate of the vehicle state quantity calculated in the past, a specific vehicle state quantity change rate calculating means for calculating the change rate of the specific vehicle state quantity, and the specific vehicle state quantity change rate An improvement degree acquisition means for acquiring, from the database, an improvement degree associated with the change rate of the specific vehicle state quantity calculated by the calculation means; and an improvement degree obtained by the improvement degree acquisition means is determined. An achievement level determination device, comprising: an output unit that outputs the achievement level. 2. An apparatus for determining the degree of improvement in driving, comprising: determination start determining means for determining determination start; determination end determination means for determining determination end; and determination start by the determination start determination means. An improvement degree determination device, comprising: a determination means for determining an improvement degree for driving from the determination to the determination of the determination end by the determination end determination means. 3. A detection means for detecting a vehicle state quantity, wherein the determination start determination means determines a determination start when the vehicle state quantity detected by the detection means exceeds a predetermined threshold value. The improvement degree determination device according to claim 2. 4. The improvement degree determination according to claim 3, wherein the determination end determination means determines the determination end when the vehicle state quantity detected by the detection means exceeds a predetermined threshold value. apparatus. 5. The improvement level determination device according to claim 2, further comprising an output unit that outputs the improvement level determined by the determination unit. 6. The improvement level determination device according to claim 5, wherein the output unit displays a display indicating the improvement level as the improvement level. 7. The improvement level determination device according to claim 5, wherein the output means outputs a voice indicating the improvement level as the improvement level. 8. A database that stores a plurality of improvement levels and a change rate of a vehicle state quantity for identifying each improvement level in association with each other, and the determination means determines the determination start from the determination start determination means. A vehicle state quantity change rate calculating means for calculating a change rate of the vehicle state quantity detected until the determination end determination means determines the vehicle state quantity change rate and a vehicle state quantity calculated by the vehicle state quantity change rate calculating means. Based on the change rate and the change rate of the vehicle state quantity calculated in the past, a specific vehicle state quantity change rate calculating means for calculating the change rate of the specific vehicle state quantity, and the specific vehicle state quantity change rate calculating means Further provided is an improvement degree acquisition unit for acquiring from the database an improvement degree associated with the calculated change rate of the specific vehicle state quantity, the determination unit being the improvement degree acquisition unit. Output as proficiency, which is determined by the proficiency acquired I, claim 4
A device for judging the degree of improvement described in.