JP2010097480A - Safe driving promotion system - Google Patents

Abstract

Provided is a safe driving promotion device that teaches information for safe driving according to a driving environment and can promote safe driving.
A safe driving promotion device includes an ECU. The ECU 2 acquires driving behavior data based on signals sent from the various vehicle sensors 7 to generate driving diagnosis values, and corrects the driving diagnosis values according to the driving environment sent from the navigation system 3 and the communication device 4. To obtain the advice necessity P. Then, the ECU 2 generates advice for prompting the driver to drive safely based on the advice necessity level P, and teaches the driver with the speaker 8 and the display 9.
[Selection] Figure 1

Description

  The present invention relates to a safe driving promotion device that encourages a driver to drive safely.

2. Description of the Related Art Conventionally, for example, a device described in Patent Document 1 is known as a device that teaches information for prompting a driver to drive safely. In the apparatus described in Patent Document 1, a driving behavior level for evaluating the driving behavior of the driver during the intersection traveling is estimated based on the traveling history of the vehicle, and the driver's intention for the driving behavior is driven based on the traveling history. Estimated as action intention. Then, based on the estimated driving action level and driving action intention, the frequency of presenting the alert information to be taught to the driver is set.
JP 2007-328612 A

  By the way, the driving behavior regarded as safe driving varies depending on the traveling environment in which the vehicle travels. For example, when the weather in the travel region of the vehicle is snow, a driving action such as not increasing the brake on a curve is considered to be safe driving. For this reason, in order to encourage the driver to drive safely, advice that matches the driver's situation (traveling environment) is more effective than conceptual advice. However, the conventional device teaches the alert information based on the traveling history of the vehicle, but does not consider the traveling environment. Therefore, even if conceptual information based only on the travel history is taught, there is a possibility that it is not effective advice for the driver.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a safe driving promotion device that teaches information for safe driving according to a traveling environment and can promote safe driving.

  The present invention relates to a driving behavior data acquisition means for acquiring driving behavior data of a vehicle driver, and a driving behavior index for generating a driving behavior index of the driver based on the driving behavior data acquired by the driving behavior data acquisition means. Generating means, correction means for correcting the driving action index generated by the driving action index generating means according to the driving environment in which the vehicle travels to obtain a driving action index correction value, and driving action index correction value obtained by the correcting means A safe driving information generating means for generating information for prompting the driver to drive safely, and a teaching means for teaching the driver the information for driving the safe driving generated by the safe driving information generating means. It is characterized by providing.

  In the safe driving promotion device according to the present invention, driving behavior data of a driver is acquired, and a driving behavior index is generated based on the driving behavior data. Then, based on the driving behavior index correction value obtained by correcting the generated driving behavior index according to the driving environment, information for promoting safe driving is generated, and the information is taught to the driver. As a result, the driving behavior index based on the driving behavior data for each driver is corrected according to the traveling environment, and information that promotes safe driving according to the traveling environment is generated. Therefore, it is possible to give advice (information) for effective safe driving suitable for driving behavior and driving environment to the driver. As a result, the driver's safe driving can be promoted.

  Preferably, the traveling environment includes at least one of a region where the vehicle travels, topography, season, weather, temperature, and time zone. Since driving behavior varies depending on the region where the vehicle travels, topography, season, weather, temperature, and time zone, it is preferable to use them as the driving environment.

  Preferably, the apparatus further comprises map storage means for storing a correction coefficient map in which a correction coefficient corresponding to the driving environment is set, and the correction means corrects the driving action index using the correction coefficient. In this case, the driving behavior index is corrected using correction factors corresponding to the driving environment such as the area where the vehicle is traveling, topography, season, weather, temperature, time zone, etc. Advice for safe driving can be taught.

  Preferably, the safe driving information generating means generates information that encourages safe driving based on a sentence including the driving behavior of the driver and the driving environment. In this case, advice that can clearly recognize the driver's driving behavior in the driving environment can be taught to the driver.

  ADVANTAGE OF THE INVENTION According to this invention, the information for safe driving according to driving environment can be taught, and promotion of safe driving can be aimed at. Thereby, the driver's awareness of safe driving can be increased.

  Hereinafter, a preferred embodiment of a safe driving promotion device according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a schematic configuration of a safe driving promotion apparatus according to an embodiment of the present invention. In the figure, the safe driving promotion device 1 acquires driving behavior data for each driver, generates information for prompting the driver to drive safely based on the driving environment, and sends the information to the driver. It is a teaching device.

  The safe driving promotion device 1 includes an ECU (Electronic Control Unit) 2. The ECU 2 is connected with a navigation system 3, a communication device 4, an ignition switch 5, a personal authentication sensor 6, various vehicle sensors 7, a speaker 8, and a display 9.

  The navigation system 3 is a system that performs estimation of the current position and traveling direction of the host vehicle, route guidance to a destination, and the like. The navigation system 3 is connected to a GPS (Global Positioning System) receiver (not shown). The navigation system 3 reads road information including information such as the shape of the road that is currently running, the position of the traffic light (intersection) in front of the host vehicle, the speed limit, and the temporary stop from the map database, and sends the road information to the ECU 2.

  The communication device 4 acquires peripheral information around the vehicle by communication, and a road-to-vehicle communication device (infrastructure communication device), a wireless communication device, or the like is used. The peripheral information includes real-time weather information and local rules corresponding to the travel position. The local rule is information that encourages the enforcement of safe driving behavior that is carried out in each area where the vehicle is traveling, and is set by a police station or local government in each prefecture. Not stored). Specifically, for example, in Shizuoka Prefecture, “caring passing” is implemented as a local rule. This “compassion passing” means that when a pedestrian is waiting for a vehicle to cross a pedestrian crossing, the vehicle stops at the stop line in front of the pedestrian crossing and performs passing on the oncoming vehicle. A stop is urged to try to cross the pedestrian.

  The ignition switch 5 is a switch for starting the engine by the driver, and is a switch for selecting any one of OFF, accessory ON, ignition ON, and engine start. The ignition switch 5 sends the selected switch state to the ECU 2 as an ignition signal.

  The personal authentication sensor 6 is a sensor that performs authentication for each driver, and examples thereof include a fingerprint sensor, a face image capturing camera, and a vehicle key authentication sensor. The personal authentication sensor 6 sends a detection signal (authentication signal) to the ECU 2. For personal authentication, for example, registration information stored in an electric key such as a smart key, input of a personal identification number from a keyboard or the like, pattern determination of a user's key groove, and the like can be substituted. In addition, before boarding the vehicle, information on a person who plans to board may be transmitted from a mobile phone or a terminal via a communication means.

  The various vehicle sensors 7 are sensors that acquire the behavior of the vehicle and the situation around the vehicle. The various vehicle sensors 7 are a steering sensor, a brake sensor, an accelerator sensor, a seat belt sensor, a headlight switch, a camera, a radar, and the like. Various vehicle sensors 7 send detection signals to the ECU 2.

  The speaker 8 teaches output information sent from the ECU 2 to the driver by voice. The display 9 displays the output information sent from the ECU 2 as an image to the driver. The display 9 may be a display of the navigation system 3.

  The ECU 2 includes a personal authentication unit 10, a driving diagnosis unit 11, a map storage unit 12, and an advice generation unit 13.

  The personal authentication unit 10 authenticates the driver based on the authentication signal sent from the personal authentication sensor 6 when the ignition signal sent from the ignition switch 5 indicates other than OFF. Is identified. The authentication result by the personal authentication unit 10 is sent to the driving diagnosis unit 11.

  When the driver is specified by the personal authentication unit 10, the driving diagnosis unit 11 performs a predetermined process based on information and signals sent from the navigation system 3, the communication device 4, and the various vehicle sensors 7 and is specified. To obtain driving behavior data for each driver. The driving behaviors for which driving behavior data is acquired include wearing seat belts, observing speed limits, pausing, sudden accelerator operation, sudden handle operation, sudden brake operation, slow turning left, safety check before starting, deceleration before the curve, lighting, etc. It is. In addition, the driving diagnosis unit 11 acquires driving behavior data based on local rules (for example, considerate passing). The driving diagnosis unit 11 generates a driving diagnosis value (driving action index) of the driver as a diagnosis item based on the acquired driving action data and the driving environment (date and time, weather, etc.), and the driving diagnosis value is in ascending order ( Sort the diagnosis items in the worst order.

  The advice generation unit 13 refers to the map storage unit 12 based on the information transmitted from the navigation system 3 and the communication device 4 and selects a weighting coefficient (correction coefficient) for each factor of the driving environment. The map storage unit 12 stores a weighting factor map in which weighting factors corresponding to factors of the driving environment for each diagnosis item are set. Specifically, the factors and weighting factors of the weighting factor map are, for example, when the diagnosis item is “deceleration before curve”, position (city area, mountainous area, flat land) = (1.0, 1.2, 1.0), season (spring , Summer, autumn, winter) = (1.1, 0.9, 1.0, 1.3), time zone (20: 00-8: 00, 8: 00-15: 00, 15: 00-20: 00) = (1.3, 1.0 1.1), weather (sunny, fog, cloudy, snow) = (0.9, 1.1, 1.0, 1.5), temperature 0.5-2.0, prefecture-specific 0.8-1.5, etc.

And the advice production | generation part 13 correct | amends a driving diagnosis value according to the selected weighting coefficient, and calculates | requires the advice necessity (driving action parameter | index correction value) P. FIG. Specifically, the advice generation unit 13 obtains the advice necessity P by the following formula.
Necessity of advice P = (total weighting factor × (100−driving diagnosis value)) / number of driving environment factors (1)

  The advice generation unit 13 generates advice that prompts the driver to drive safely based on the advice necessity P obtained by the above equation (1). The advice generation unit 13 outputs the generated advice as output information to the display 9 and the speaker 8. Note that the output information may be sent to either the display 9 or the speaker 8.

  FIG. 2 is a flowchart showing details of the processing procedure of driving behavior data acquisition executed by the driving diagnosis unit 11.

  In FIG. 2, first, an ignition signal is input from the ignition switch 5 (step S01). Next, personal authentication is performed based on the authentication signal input from the personal authentication sensor 6 (step S02). And acquisition of the driving action data of the driver specified by personal authentication is started (procedure S03).

  When acquisition of driving behavior data is started, driving environment factors such as driving position, date, weather, season, etc. are acquired based on road information and surrounding information (step S04). Also, based on surrounding information, A local rule is acquired (procedure S05). Then, based on the acquired driving behavior data, traveling environment, and local rules, a diagnostic item is set, and a driving diagnostic value (see FIG. 4) for the diagnostic item is generated (step S06).

  As specific generation of driving diagnosis values, for example, in the case of local rules (compassive passing), when a pedestrian is detected by a camera or radar provided in front of the vehicle, When the stop line is temporarily stopped and passing is performed, a predetermined operation diagnosis value is given to the diagnosis item. The above processing is performed until the driving is completed, and the generated driving diagnosis value and the diagnosis item are stored in association with each other (step S07).

  FIG. 3 is a flowchart showing details of the processing procedure of the advice teaching executed by the advice generation unit 13. This process is executed in parallel with the process of the driving diagnosis unit 11.

  In FIG. 3, first, an ignition signal is input from the ignition switch 5 (step S11). Next, personal authentication is performed based on the authentication signal input from the personal authentication sensor 6 (step S12). Subsequently, the diagnostic items acquired and stored by the previous driving of the driver who has been authenticated are read (step S13). Further, factors of the driving environment such as the driving position, date / time, weather, season, and the like are acquired based on the road information and the peripheral information (step S14).

  The read diagnostic items are rearranged (sorted) in order of decreasing driving diagnosis value (worst order) (step S15). FIG. 4 is a table showing an example of rearrangement of diagnosis items according to driving diagnosis values. FIG. 4A is a table showing the diagnostic items before rearrangement, and FIG. 4B is a table showing the diagnostic items after rearrangement. As shown in FIG. 4, according to the driving diagnosis value, (1) sudden acceleration, (2) increase of brake pedal in curve, (3) temporary stop line non-stop, (4) left turn passing speed, (5) compliance with speed limit (6) The diagnosis items are rearranged in the order of wearing the seat belt.

  Returning to FIG. 3, the map storage unit 12 is referred to based on the acquired traveling environment, and a weighting factor for each diagnostic item is selected from the weighting factor map (step S16). FIG. 5 is a table showing an example of the weighting factor of each factor of the driving environment selected for each diagnosis item. In FIG. 5, for example, a destination is set in the navigation system 3 by a driver, and each factor of the driving environment up to the destination is determined to pass through a region: Shizuoka Prefecture, a place: a mountainous area, time: winter, Time: Early morning (20: 00-8: 00), Weather: Snow, Temperature: 2 ° C. As shown in FIG. 5, the weighting factor in the traveling environment is selected for each of the diagnostic items (1) to (6).

Returning to FIG. 3, based on the selected weighting factor, the advice necessity P is obtained (step S17). The advice necessity P is obtained by the above equation (1). Specifically, for each diagnosis item shown in FIG. 5, the advice necessity P is obtained as follows.
Need for advice for diagnostic item (1) P = (7.6 × (100 + 45)) / 6 = 183.66
Need for advice for diagnostic item (2) P = (9.3 × (100 + 38)) / 6 = 213.90
Need for advice for diagnosis item (3) P = (6.7 × (100 + 21)) / 6 = 135.11
Need for advice of diagnosis item (4) P = (6.8 × (100 + 12)) / 6 = 126.93
Need for advice on diagnostic item (5) P = (7.6 × (100 + 8)) / 6 = 136.80
Need for advice of diagnosis item (6) P = (7.6 × (100-80)) / 6 = 20.66

  Subsequently, the diagnosis items are rearranged on the basis of the advice necessity P obtained as described above (step S18). FIG. 6 is a table showing an example of rearrangement of diagnostic items according to the degree of necessity of advice. FIG. 6A is a table showing diagnostic items before rearrangement (corresponding to FIG. 4B), and FIG. 6B is a table showing diagnostic items after rearrangement. is there. As shown in FIG. 6, based on the degree of advice necessary P, (2) increase of brake pedal in the curve, (1) sudden acceleration, (5) compliance with speed limit, (3) stop line non-stop, (4) The diagnostic items are rearranged in the order of left turn passing speed and (6) seat belt wearing.

  Then, it is determined whether or not the highest level of necessity for advice P (increase of the brake pedal in the curve) is larger than a predetermined value P1 (for example, 200) (P> P1) (step S19). When the advice necessity P is larger than the predetermined value P1, the process proceeds to step S20. On the other hand, if the advice necessity level P is equal to or less than the predetermined value P1, the process ends.

  In step S20, advice for urging the driver to drive safely is generated. Specifically, as shown in FIG. 7, the diagnosis item “increase in brake on the curve” having the highest advice necessity P, and the driving environment “terrain (mountain), weather (“ Snow) ”. Then, a sentence including the driving action and the driving environment is generated, such as “Snowy mountain is easy to slip, so it is strictly prohibited to step on the brake during the curve”. The generated advice as a sentence is output as output information to the display 9 and the speaker 8 (step S21).

  In the above, the procedure S03 of the various vehicle sensors 7 and the driving diagnosis unit 11 constitutes driving behavior data acquisition means for acquiring driving behavior data of the driver of the vehicle. The procedure S06 of the driving diagnosis unit 11 constitutes a driving behavior index generation unit that generates a driving behavior index (driving diagnosis value) of the driver based on the driving behavior data acquired by the driving behavior data acquisition unit. The above steps S16 and S17 of the advice generation unit 13 correct the driving action index generated by the driving action index generating means according to the driving environment in which the vehicle travels to obtain a driving action index correction value (advice necessity level P). Configure. The above steps S18 to S20 of the advice generation unit 13 constitute safe driving information generation means for generating information (advice) that prompts the driver to drive safely based on the driving action index correction value obtained by the correction means. To do. The procedure S21, the display 9, and the speaker 8 of the advice generation unit 13 constitute teaching means for teaching the driver the information for prompting safe driving generated by the safe driving information generating means.

  As described above, in the safe driving promotion device 1 of the present embodiment, first, the driving behavior data of the driver is acquired, and the driving diagnostic value corresponding to the diagnostic item is generated based on the driving behavior data. Then, at the start of the next driving, the generated driving diagnosis value is corrected according to the weighting factor set for each factor of the current driving environment to obtain the advice necessity P, and safe driving is performed based on the advice necessity P. An advice composed of sentences including driving behavior and driving environment for prompting is generated, and the advice is taught to the driver. Therefore, it is possible to teach the driver advice for effective safe driving suitable for driving behavior and driving environment. As a result, the driver's safe driving can be promoted, and the driver's awareness of safe driving can be enhanced.

  In addition, when starting the engine, advice based on the driving behavior up to the previous time and the driving environment in the future is taught, so it is necessary to recognize the driving behavior that should be noted while grasping the situation of the driving route to the destination Can do. Therefore, it is possible to teach advice that is highly convincing for the driver.

  In addition, since driving behavior data based on local rules is acquired and advice is generated, it can contribute to the traffic safety movements and the like that the local community works on, and it can activate the traffic activities in the region and has not been recognized before. An opportunity to know the local rules can be provided to the driver. Therefore, it can contribute to the realization of smooth traffic suitable for the region.

  Further, since the advice is taught to the driver when the advice necessity level P is equal to or greater than the predetermined value P1, the advice is not taught to the driver who is performing safe driving. Therefore, the troublesomeness of the driver who is performing safe driving can be eliminated.

  The present invention is not limited to the above embodiment. For example, in the above embodiment, the advice is taught at the start of driving, but the timing for teaching advice is not limited.

  Moreover, in the said embodiment, although the rearrangement of the diagnostic item is performed based on the driving | operation diagnostic value or the advice necessity P, rearrangement does not necessarily need to be performed. In this case, the process is performed using the value of the driving diagnosis value or the advice necessity P as an index.

  Further, in the above-described embodiment, advice is generated when the advice necessity level P is equal to or higher than the predetermined value P1 in the diagnosis item having the highest advice level P, but for all the diagnostic items having the predetermined value P1 or higher. Advice may be generated and taught. Further, advice for diagnostic items whose advice necessity level P is within a predetermined range may be generated, and the advice may be always taught during route guidance of the navigation system 4, for example. In this case, the improvement point of the driving behavior can be recognized while driving by comparing the actual driving behavior with the objective driving behavior.

It is a block diagram showing a schematic structure of a safe driving promotion device concerning one embodiment of the present invention. It is a flowchart which shows the detail of the process sequence of the driving action data acquisition performed by a driving diagnosis part. It is a flowchart which shows the detail of the processing procedure of the advice teaching performed by the advice production | generation part. It is a table | surface which shows an example of rearrangement of the diagnostic item according to a driving | operation diagnostic value. It is a table | surface which shows an example of the weighting coefficient of each factor of the driving environment selected for every diagnostic item. It is a table | surface which shows an example of rearrangement of the diagnostic item according to the advice necessity degree. It is a table | surface which shows an example of advice production | generation.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Driving assistance device, 2 ... ECU (driving action data acquisition means, driving action index generation means, correction means, safe driving information generation means), 7 ... Various vehicle sensors (driving action data acquisition means), 8 ... Speaker (teaching) Means), 9 ... display (teaching means), 11 ... driving diagnosis unit (driving behavior data acquisition means, driving behavior index generation means), 12 ... map storage unit (map storage means), 13 ... advice generation unit (correction means, correction means, Safe driving information generation means, teaching means).

Claims (4)

Driving behavior data acquisition means for acquiring driving behavior data of a vehicle driver;
Based on the driving behavior data acquired by the driving behavior data acquisition means, driving behavior index generation means for generating a driving behavior index of the driver;
Correction means for correcting the driving action index generated by the driving action index generating means according to a driving environment in which the vehicle travels to obtain a driving action index correction value;
Safe driving information generating means for generating information for encouraging the driver to drive safely based on the driving action index correction value obtained by the correcting means;
Teaching means for teaching the driver the information for prompting the safe driving generated by the safe driving information generating means;
A safe driving promotion device comprising:   The safe driving promotion device according to claim 1, wherein the traveling environment includes at least one of an area where the vehicle travels, topography, season, weather, temperature, and time zone. Map storage means for storing a correction coefficient map in which a correction coefficient corresponding to the traveling environment is set;
The safe driving promotion device according to claim 1, wherein the correction unit corrects the driving action index using the correction coefficient. The said safe driving information production | generation means produces | generates the information which encourages the said safe driving with the text containing the said driver | operator's driving behavior and the said driving environment, The Claim 1 characterized by the above-mentioned. Safe driving promotion device.

Images