JP4636383B2 - Safe driving support system - Google Patents

Description

  The present invention relates to a safe driving support system.

Patent Document 1 below discloses an operation management system that prevents the recurrence of a traffic accident. For example, information such as a vehicle speed at the time of sudden braking is recorded in a storage device such as a drive recorder or a digital tachograph mounted on a commercial vehicle. Analyze the recorded data with a personal computer after driving, pay attention to crew members who drive dangerously, and use it for daily safe driving guidance.
JP 2002-42288 A

  However, the crew usually receives instructions for safe driving when not in the vehicle, and forgets the precautions during driving, so there is a problem that driving is not easily improved. If a warning is given by a display or voice when a dangerous driving is performed while traveling, there is a problem that stress is given to the crew instead.

  The present invention has been made in the background as described above. In particular, it is an object of the present invention to provide a system that can effectively support safe driving without causing unnecessary stress on the driver.

Means for Solving the Problems and Effects of the Invention

The safe driving support system of the present invention includes :
Storage means for storing vehicle running state information such as vehicle speed and engine speed;
Based on the vehicle running state information stored in the storage means, caution information creating means for creating caution information indicating the content of words to call attention for instructing safe driving;
Detection means for detecting whether the ignition switch is operated,
Output control means for outputting the caution information by voice when the ignition switch is operated;
A time measuring means for acquiring date and time information;
Determination means for determining that dangerous driving has been performed when the vehicle running state information exceeds a predetermined value ,
The storage means stores the vehicle running state information and information on the date and time when the determination means determines that the dangerous driving has been performed ,
The caution information creating means is based on the date and time information from the prepared caution information, the dangerous driving when the dangerous driving is not corrected within a predetermined period, or the dangerous driving performed within a predetermined period. Select the caution information corresponding to the driving,
The output control means outputs the caution information selected by the caution information creation means by voice .

  According to the above invention, the storage device is mounted on the vehicle, and the vehicle speed, the engine speed, and the like are stored in the storage device. When the operation ends, attention information for safe driving is created based on the stored information. The caution information is automatically created by a system mounted on the vehicle, or is taken by taking a storage device (for example, a memory card) and analyzing it with a personal computer.

  At the next time of driving, that is, when the ignition switch is operated, the caution information is output by voice or display. The driver can drive without forgetting the contents by listening to or watching the caution information immediately before driving. Therefore, the guidance effect of safe driving increases.

In addition, the safe driving support system of the present invention can be configured to include an ignition blocking means for controlling the ignition switch not to be turned on until the output of the caution information is completed.

  According to the above invention, the ignition switch power supply is not connected until the output of the caution information is completed. Therefore, the driver can be surely told the caution information.

Further, the safe driving support system of the present invention includes a confirmation operation unit that accepts a content confirmation operation of the caution information by the driver,
Canceling means for canceling the function of the ignition blocking means on the condition that the confirmation operation unit is operated;
It can also comprise .

  According to the above invention, the vehicle is provided with the confirmation operation unit (confirmation button). After the warning information is output, for example, “Please try to step on the accelerator slowly when starting. If you agree, press the confirmation button.” The engine can be started when the driver presses the confirmation button. . Therefore, the driver can understand the precautions for safe driving more reliably.

Furthermore, the safe driving support system of the present invention includes position detection means for detecting the current position of the vehicle,
Comprising position detecting means for detecting the current position of the vehicle;
The storage means stores the vehicle running state information and position information determined by the determination means that the dangerous driving has been performed ,
The caution information creating means may be configured to create the caution information regarding a route traveled by the vehicle based on the position information .

  According to the above invention, the position detecting means for detecting the current position information of the vehicle is provided, and the position where the dangerous driving is performed can be recorded. Thereby, it is possible to detect an excessive speed compared with the regulation information (such as a speed limit) for each road, or to detect a travel in a prohibited area such as a narrow road in a residential area. Therefore, it is possible to give more detailed guidance on safe driving.

  According to the above invention, information on the date and time when the dangerous driving was performed is stored. As a result, for example, it is possible to provide guidance when dangerous driving has been performed in the past and correction has not been made within a certain period of time. In addition, it is possible to provide guidance on dangerous driving that has been particularly noticeable recently (for example, what has been noticeably performed in the past two weeks).

Further, the caution information creating means may be configured to create the caution information so that a time for outputting the sound is within a predetermined time.

  According to the said invention, the audio | voice output of safe driving guidance can be stored within predetermined time (for example, within 1 minute). If the guidance time is too long, the driver may not be able to grasp or concentrate, but according to the invention, such a problem can be prevented.

  Embodiments of the present invention will be described with reference to the drawings. In the following embodiments, a system for supporting the safe driving of a business vehicle driver will be described. However, the present invention is not limited to a business vehicle, but can be applied to a private vehicle.

  FIG. 1 is a conceptual diagram of a safe driving support system 1, and FIG. 2 is a detailed block diagram on the vehicle side. Thus, the speaker 3, the confirmation button 6 (the confirmation operation unit of the present invention), the ignition switch 5 (IG switch), the engine computer 8, the vehicle speed sensor 9, and the gear position sensor 10 are connected to the vehicle-mounted device body (control circuit 2). Has been. Further, as shown in FIG. 2, an interface (I / F) unit 17 for inserting a memory card 4 (storage means of the present invention), a time measuring device 18 for acquiring date and time information (time measuring means of the present invention). The position detector 12 (position detecting means of the present invention), the inter-vehicle distance measuring system 16, the acceleration sensor 19, and the display device 31 are connected.

  The engine computer 8 performs engine fuel injection control, rotation speed control, and the like, and inputs the engine rotation speed to the control circuit 2. A vehicle speed is input from the vehicle speed sensor 9, and a gear operation position is input from the gear position sensor 10. The vehicle distance measurement system 16 is a system that measures an inter-vehicle distance by using, for example, a photographed image of a preceding vehicle or using radar or infrared rays. In addition, the acceleration of the vehicle is input from the acceleration sensor 19. These pieces of input information are written into the memory card 4 by the control circuit 2 together with date / time information and vehicle position information.

  The control circuit 2 is configured as a normal computer and includes a well-known CPU (Central Processing Unit) 20, ROM (Read Only Memory) 21, RAM (Random Access Memory) 22, I / O (Input / Output) 23, and A bus line 24 for connecting them is provided. The CPU 20 controls the program and data stored in the ROM 21. The RAM 22 includes a work memory 22a, and a program is executed with the work memory 22a as a work area.

  As shown in FIG. 3, the ROM 21 stores various programs such as a detection program 21a, an output control program 21b, an ignition cutoff program 21c, and a release program 21d. The detection program 21a is a program that detects whether or not the IG switch 5 has been operated. The output control program 21 b is a program that outputs the caution information stored in the memory card 4 to the speaker 3 or displays it on the display device 31 when the IG switch 5 is operated. The ignition cutoff program 21c is a program that controls the IG switch 5 so that it does not turn ON until the output of the caution information is completed. The cancellation program 21d is a program that enables the ignition power supply to be connected (releases the function of the ignition cutoff program 21c) on condition that warning information is output and the confirmation button 6 is pressed by the driver. When the CPU 20 executes the detection program 21a, the output control program 21b, the ignition cutoff program 21c, and the release program 21d, the detection means, output control means, ignition cutoff means, and release means of the present invention are realized.

  Returning to FIG. The position detector 12 detects the azimuth based on the geomagnetism, calculates the azimuth by detecting the angular velocity, the geomagnetic sensor 13 that acquires the azimuth data representing the detected azimuth, and the azimuth data indicating the calculated azimuth The gyroscope 14 for acquiring the distance, the distance sensor 15 for detecting the travel distance, acquiring the distance data indicating the detected distance, and the GPS radio wave transmitted from the GPS (Global Positioning System) satellite are received and received. And a GPS receiver 7 that calculates parameters stored in GPS radio waves and acquires position data. Since these sensors 13, 14, 15, 7 have errors of different properties, they are used while being complemented by a plurality of sensors. Depending on the accuracy, some of the sensors described above may be used, and further, a steering rotation sensor, a wheel sensor of each rolling wheel, or the like may be used.

  The display device 31 displays an image based on a signal from the control circuit 2, and an LCD panel or the like is used. As the display device 31 and the speaker 3, a dedicated device for the safe driving support system 1 may be used, and when the navigation device is mounted on the vehicle, the device for the navigation device may be used.

  Returning to FIG. A personal computer (PC) 11 that can be connected to the memory card 4 is provided in the office. The PC 11 is installed with a program that analyzes information recorded in the memory card 4 and creates driving characteristics and cautions for driving. After the operation is finished, the crew removes the memory card 4 after the operation and takes it back to the office. By analyzing the information stored in the memory card 4 in the office PC 11, the driving characteristics of the crew and the precautions for driving are printed, and the information (the precaution information of the present invention) is stored in the memory card 4. Written. For example, “Driving characteristics: a lot of rapid acceleration. Note: Be sure to step on the accelerator slowly when starting.” The printed matter is given to the crew on the spot.

  FIG. 4 shows an example of information stored in the memory card 4. Thus, vehicle running state information such as vehicle speed, engine speed, and gear position is stored together with date / time information and position information. The position information is stored as latitude and longitude information. On the other hand, the map information and the speed limit of each road are stored in a map database 30b (see FIG. 5), which will be described later, and it is determined from the position information and the vehicle speed information in the memory 4 whether or not the speed limit of the road that has traveled has been exceeded. It can be determined by the PC 11. Example 1 and Example 3 in FIG. 4 are cases where the speed limit is exceeded, and Example 2 is an example in which the speed limit is exceeded. In addition to the vehicle speed, engine speed, and gear position, acceleration and inter-vehicle distance may be stored as the vehicle running state information.

  The vehicle running state information may be stored in the memory card 4 at a constant time interval (for example, 1 minute), or may be stored only when the vehicle speed or the engine speed exceeds a predetermined value.

  Next, a block diagram of the PC 11 is shown in FIG. The PC 11 includes a well-known CPU 25, ROM 26, RAM 27, I / O 28, HDD 30, and a bus line 29 that connects them. The HDD 30 stores a caution information creation program 30a, a map database 30b, and tables 30c and 30d for creating caution information. When the CPU 25 executes the caution information creation program 30a, the caution information creation means of the present invention is realized. Further, the map database 30b includes map information and regulation information for each road (speed limit, one-way traffic, prohibition of large vehicle entry, etc.). Based on the latitude / longitude position information stored in the memory card 4, the name of the road on which the vehicle has traveled and its regulation information can be acquired.

  Examples of the tables 30c and 30d stored in the HDD 30 are shown in FIGS. The table 30c associates vehicle running state information with caution information. For example, when the speed limit is exceeded, warning information “Please refrain from speed” is generated. When sudden braking is performed, warning information “Let's watch out for sudden braking” is generated. In addition, the table 30d in FIG. 7 associates position information and attention information. For example, when traveling on National Highway No. 1, attention information “On National Highway No. 1” is generated and combined with other attention information. For example, if the speed limit is exceeded on National Route 1, the table 30d “National Route 1” and the table 30c “Please refrain from speed” are combined and “Please refrain from speed on National Route 1.” It becomes. Since the method (system) itself for generating the voice information is a known technique, details are omitted.

  By creating caution information using information on the position where dangerous driving was performed, it is possible to detect traveling in areas where travel is prohibited such as excessive speed on each road or narrow roads in residential areas, etc. Detailed guidance on safe driving can be provided. In addition, it is possible to add caution points for each driving route, such as a characteristic of the driving for each crew road, for example, “Please refrain from speed in the section from XX to XX on the XX line”. Thereby, finer safety guidance can be realized.

  In addition, in PC11, the information at the time of dangerous driving is memorize | stored in HDD30 for every crew member. That is, the vehicle speed, engine speed, and gear position recorded in the memory card 4 are compared with a map database 30b (see FIG. 5) containing road regulation information, and overspeed, sudden acceleration, sudden deceleration, and too much engine speed. In the HDD 30, the crew member is stored in the HDD 30 for each crew member together with date / time information and position information. In addition, the HDD 30 stores the planned traveling route of each crew member, and by using these pieces of information, attention information regarding the route on which the crew member travels that day is preferentially created.

Attention information may be created according to the following rules.
(1) If there is a place where a dangerous driving has been committed in the past in the planned driving route, and this has not been corrected in the subsequent driving, a word for instructing the driving is entered as a candidate.
(2) Put words to be instructed about dangerous driving that has recently become particularly prominent (for example, what has been prominently committed in the past two weeks).
(3) Put words that teach about dangerous driving that all crew members have committed recently (about 2 weeks) as candidates.
(4) Pick up with the priority of (1), (2), (3) so as to be within one minute from the above candidate.
(5) The candidates picked up in (4) are recorded on the memory card 4.

  The reason for making it fit within 1 minute of (4) above is that there are many candidates and the points of caution are long and the work is not hindered. This is to avoid concentrating on listening to cautions. You may change this time for every operator and every crew member.

  In the next operation, the crew member receives the memory card 4 storing the caution information at the office and gets into the vehicle. When the crew member inserts the memory card 4 and turns the IG switch 5, the control circuit 2 is activated, and the cautions such as “Please try to step on the accelerator slowly when starting” are recorded in the memory card 4. 3 is output as audio. In this way, prompting cautions on traveling immediately before the operation leads to an improvement in safe driving.

  As described above, the safe driving support system 1 operates mainly by executing the detection program 21a, the output control program 21b, the ignition cutoff program 21c, and the release program 21d. The detailed operation of these programs will be described below with reference to the flowchart of FIG.

  First, in step S1, it is determined whether or not the memory card 4 has been inserted. If Yes, the process moves to S4, and if No, the process moves to S2. In S2, it is determined whether or not the IG switch has been operated. If the answer is No, the process returns to S1, and if Yes, the process moves to S3 and a voice notification “insert a memory card” is made. By processing S1 to S3 in this manner, a memory card insertion request is made when the IG switch 5 is turned without inserting the memory card 4.

  In S4, due to the action of the ignition cutoff program 21c, even if the IG switch 5 is turned, the ignition power source is not connected and the engine does not start. Thereafter, the speaker 3 outputs a voice message “Please press the confirmation button before starting” (S5). Then, it is determined whether or not the confirmation button 6 has been pressed (S6). When the crew member presses the confirmation button 6, the caution information in the memory card 4 is output from the speaker 3 (S7). For example, a voice message “Please try to step on the accelerator slowly when starting off” is output. Subsequently, “Please press the confirmation button if OK” is output (S8).

  Thereafter, it is determined whether or not the confirmation button 6 has been pressed (S9). When the crew member presses the confirmation button 6, the process proceeds to S10. In S10, the ignition cutoff function is released by the action of the release program 21d, and the engine is started when the IG switch 5 is turned.

  As described above, if attention information is output (S7) and the confirmation button is not pressed (S9), the ignition power source is not connected even if the IG switch 5 is turned (S10), and the operation cannot be started. Thereby, it becomes possible to convey warning information to a crew member reliably. Further, since the caution information is transmitted immediately before the operation of the vehicle, the crew can start the operation without forgetting the contents thereof, and thus it is possible to enhance the guidance effect of the safe driving.

  In the above embodiment, the example in which the caution information is output from the speaker 3 is mainly described. However, the caution information may be displayed on the display device 31.

Schematic of a safe driving support system. The detailed block diagram of a safe driving assistance system. Program stored in ROM. An example of information stored in a memory card. PC block diagram. An example of a table stored in the HDD. Another example of a table. The flowchart of a safe driving assistance system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Safe driving support system 2 Control circuit 3 Speaker 4 Memory card (memory means)
5 Ignition switch 6 Confirmation button (confirmation operation part)
7 GPS receiver 8 Engine computer 9 Vehicle speed sensor 10 Gear position sensor 12 Position detector (position detection means)
18 Timekeeping device (timekeeping means)
21a Detection program 21b Output control program 21c Ignition cut-off program 21d Release program 30a Caution information creation program

Claims (5)

Storage means for storing vehicle running state information such as vehicle speed and engine speed;
Based on the vehicle running state information stored in the storage means, caution information creating means for creating caution information indicating the content of words to call attention for instructing safe driving;
Detection means for detecting whether the ignition switch is operated,
Output control means for outputting the caution information by voice when the ignition switch is operated;
A time measuring means for acquiring date and time information;
Determination means for determining that dangerous driving has been performed when the vehicle running state information exceeds a predetermined value ,
The storage means stores the vehicle running state information and information on the date and time when the determination means determines that the dangerous driving has been performed ,
The caution information creating means is based on the date and time information from the prepared caution information, the dangerous driving when the dangerous driving is not corrected within a predetermined period, or the dangerous driving performed within a predetermined period. Select the caution information corresponding to the driving,
The safe driving support system , wherein the output control means outputs the caution information selected by the caution information creating means by voice . The safe driving support system according to claim 1, further comprising an ignition blocking unit that controls the ignition switch not to be turned on until the output of the caution information is completed. A confirmation operation unit that accepts a content confirmation operation of the caution information by the driver;
Canceling means for canceling the function of the ignition blocking means on the condition that the confirmation operation unit is operated;
A safe driving support system according to claim 2 . Comprising position detecting means for detecting the current position of the vehicle;
The storage means stores the vehicle running state information and position information determined by the determination means that the dangerous driving has been performed ,
The safe driving support system according to any one of claims 1 to 3 , wherein the caution information creating means creates the caution information regarding a route traveled by the vehicle based on the position information . The safe driving support system according to any one of claims 1 to 4 , wherein the caution information creating unit creates the caution information so that a time during which sound is output is within a predetermined time.

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