JP2007032522A - Wavelike operation evaluating device and its method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To present an understandable quantitative evaluation form relating to "wavelike operation" by a driver himself from a digital travel record mounted in an individual vehicle for avoiding such useless "wavelike operation", which is repeated excessive speed changes and regarded as one of the causes of precluding economical operation with reduced fuel consumption per travel distance, increasing the fuel consumption on a high-speed way in particular. <P>SOLUTION: From the record of a travelling vehicle speed recorded on a digital tachometer, an average value Fv=Sv/T((km/h)/min) over a time T about a cumulative value Sv for vehicle speed changes is computed which is set as an evaluation value. A standard value is prepared for every vehicle model and compared therewith to statistically evaluate the skill of the driver. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an apparatus and a method for evaluating a driver's driving skill using data read from an operation recording device attached to a vehicle. For example, a driving mode that wastes fuel by repeatedly accelerating or decelerating on a road surface that can be economically operated at a constant speed for a corresponding long time, such as an expressway (this type of driving is here) It is expressed as “wavy driving” and is distinguished from driving modes that repeat unnecessary sudden acceleration on ordinary roads.) This is used to evaluate this.

  The present invention relates to an accelerator operation evaluation apparatus and evaluation method for an accelerator operation by the same applicant who filed a patent application at the same time, mainly for evaluating a driving operation on a normal road. Suitable for use to evaluate driving operations on highways.

  Business vehicles such as buses, trucks, taxis, and hire are equipped with operation recording devices (commonly called tachographs) that record their running conditions. Generally, when one driver finishes working for a day, a record of the driving state is taken out from the vehicle and submitted to the operation manager, which is stored as a record for a long time by the operation manager.

  In recent years, as this operation recording device, a device called a digital operation recording device (commonly referred to as a digital tachometer) has come to be used. In this method, a small and portable recording medium is mounted on a recording device installed in a vehicle, and the traveling state of the vehicle is magnetically or electronically recorded over time. In this type of recording apparatus, a large amount of data can be recorded in comparison with a conventional tachograph.

  For example, the driver sets the recording medium to the in-vehicle device at the start of work, and when the day's running is finished, the driver removes the recording medium from the in-vehicle device and submits it to the operation manager. The operation manager can capture and save the contents of the recording medium in the office computer device, and can manage and evaluate the record using the computer device.

The present invention analyzes the data recorded in such a digital operation recording device later to focus on the wavy driving and quantitatively evaluate the driving skill. The wavy operation refers to an operation mode in which acceleration and deceleration are repeated. In addition, there are those described in the following documents as focusing attention on a conventionally known driving state evaluation system, in particular, the situation of vehicle speed fluctuation.
JP2003-312307 (Fujitsu) JP 2004-270580 (Daihatsu) JP 2002-89349 (Miyama)

  As the digital operation recording device as described above, a device that continuously measures a vehicle speed every t seconds (eg, t = 0.5 seconds) and records it as a digital numerical value is widely used. The numerical values recorded in this digital operation recording device are recorded by the administrator on a personal computer for each vehicle, every driver, every day, or every shift of work in a company of a certain size that operates a large number of vehicles. It is managed so that it can be stored for a long time. The present invention intends to quantitatively evaluate the skill of the driver using the operation record taken in the personal computer.

  In the present application, attention is paid to a driving operation on a road surface that can be driven at a constant speed over a suitable time among the skills of the driver. For example, on an expressway with a small amount of traffic, it is possible to drive the vehicle so as to reduce the fuel consumption per mileage (liter / km) while maintaining an appropriate economic speed of the vehicle for a corresponding long time. In this way, driving operations that repeatedly accelerate and decelerate on a road surface that can travel at a constant speed for a considerable length of time significantly impedes the economic driving that the company intends. . In the form of long-distance transportation using highways, the company selects a time zone with low traffic volume, such as nighttime, and sets an operation plan so that it can travel at the optimal economic speed for as long as possible. However, if the driver who actually performs the driving operation does not perform the driving operation with such consciousness, the fuel consumption per mileage will not be reduced as a result.

  The present invention has been carried out against this background, and quantifies the skill of the driver, in particular, the driving skill that can be operated while maintaining a constant speed over a long period of time even when the supervisor is not on board. It is an object of the present invention to provide an evaluation method and apparatus that can be evaluated automatically. An object of this invention is to provide the evaluation method and apparatus for making a driver | operator keep in mind to perform economical driving | operation operation. An object of the present invention is to provide an evaluation method and apparatus for evaluating a skill for driving while maintaining a predetermined speed after performing a series of runs using recording by a digital operation recording apparatus. To do. SUMMARY OF THE INVENTION An object of the present invention is to provide an evaluation method and apparatus that can be easily understood by a driver who does not understand mathematical logic by simplifying operations and that can accurately represent an entity. It is an object of the present invention to provide an apparatus and a method that are used to present a quantitative target to a driver so as to keep an economical driving operation in mind.

The present invention is a recording of the running vehicle speed that is recorded to a digital tachometer, the vehicle speed is a predetermined value: the cumulative value of the vehicle speed fluctuation over (V ₀ Example 70 km / h) traveling time to focus on more than a period (T) (Sv ) And an average value within the time for the accumulated value Fv = Sv / T ((km / h) / min)
And means for calculating.

  About evaluation of this obtained average value, it can mutually compare about the different working hours of a driver | operator individual. Moreover, it can also compare with the skill of another colleague driver by comparing with the said average value (Fv) about the other driver who drives the same kind of vehicle. Furthermore, a standard value corresponding to the above average value (Fv) is prepared in advance for each vehicle type used in the sales office or the company, and each driver is provided for this standard value. The record of the individual driving time can be compared with this to provide a basis for guidance and to present the desired achievement target value to the driver.

  The means for calculating the cumulative value (Sv) of the vehicle speed fluctuation includes a minute fluctuation whose value of the vehicle speed fluctuation is a predetermined value (σv, for example, 2 km / h) or less when calculating the cumulative value. It can be set as the structure containing the means to exclude. In other words, the minute fluctuations in the traveling speed obtained from the traveling record are considered to be fluctuations that are not directly related to the driving skill, and are ignored in the calculation process.

  However, according to the inventors' trial, it has been found that the skill of the driver can be appropriately evaluated according to the present invention without obtaining the average value (Fv) so strictly. In other words, the evaluation values of drivers who are willing to drive economically and drivers who are not so can be clearly distinguished in many cases. In particular, when evaluating a state in which the vehicle is traveling on an expressway, even if the calculation is performed without the detailed processing, a fairly appropriate evaluation can be performed from the calculation result. That is, an apparatus that can perform a practical evaluation accordingly can be obtained by approximately configuring the apparatus described in the claims of the present application.

  Another aspect of the present invention is a method for evaluating wavy driving, and for a traveling speed (km / h) of a vehicle, an absolute value of a difference between a maximum value and a minimum value of the vehicle speed of the vehicle is integrated over a predetermined time (minute). Then, an evaluation value (eg, (km / h) / min) per unit time is calculated for the integrated value.

  Further, by replacing the “evaluation value per unit time” with the “evaluation value per unit distance”, the wavy driving can be evaluated. That is, still another aspect of the present invention is to integrate the absolute value of the difference between the maximum value and the minimum value of the vehicle speed over a predetermined travel distance (km) with respect to the travel speed (km / h) of the vehicle. By calculating an evaluation value per unit travel distance (for example, (km / h) / km) for the value, it is possible to evaluate the degree of the wavy operation.

  FIG. 1 is a schematic diagram for explaining the overall configuration of the embodiment apparatus of the present invention. A company that implements the present invention has many trucks (cargo transportation, delivery), passenger cars (taxi, hire), buses (tourism, routes), etc. and operates daily. Taking a sales office serving as a truck base for carrying out the present invention as an example, a single sales office operates a large number of delivery trucks (several tens to thousands, sometimes exceeding 10,000). Yes. It employs nearly twice as many drivers as it owns.

  A driver who has attended a truck base operation office illustrated in FIG. 1 gets on the vehicle 1 designated to drive on that day in accordance with an instruction for a predetermined individual. Then, the recording medium 3 delivered together with the instructions is attached to the digital tachometer 2 installed in the driver's seat. The recording medium 3 is a single plastic card as an example. This is a slightly thick card similar to the prepaid card used at the railway ticket gate. Although the identification number is written on the surface, all information is recorded on the magnetic material or semiconductor in the card, and the recorded content cannot be read with the naked eye from the surface. The recording medium 3 is written with the name or identification number of the driver, the date, the designated vehicle to be driven on that day, and other information when the designated driver receives the information.

  A digital tachometer 2 mounted on the vehicle 1 is electrically connected to an engine control unit (ECU) and various sensors. Each information is taken in via this connection and can be recorded on the recording medium 3 in a predetermined format together with time information generated by a clock built in the digital tachometer 2. Although the form of this recording has been standardized to some extent, when the recording medium 3 is loaded, the digital tachometer 2 is activated, basic data (time, vehicle speed, mileage, etc.), operation management data (traveling state, work, Temperature, etc.) and others (fuel flow rate, engine rotation, accelerator opening, etc.) are automatically edited according to a predetermined method and sequentially recorded on the recording medium 3. This recorded information is recorded on the magnetic medium (or semiconductor recording medium) of the card, and the contents cannot be read from the outside with the naked eye.

  The driver who drives the vehicle operates the vehicle according to the operation instructions not directly related to the contents of the present invention, and delivers the cargo from the cargo accumulation base and one or more destinations. Or receive the shipment. If necessary, refuel with standing at a predetermined filling station. One service office manages, for example, tens to thousands of vehicles, and drivers who drive the vehicles.

  Each driver returns to the base where the service office is located when the delivery or collection of the day is completed. At the base, the load is lowered to a designated position or a new load is loaded. The recording medium 3 is removed from the digital tachometer 2 when the vehicle engine is stopped before the end of working hours. This recording medium 3 is submitted to the operation office together with a delivery collection report.

  The operation office is equipped with a personal computer 4, and the recording medium 3 provided by the driver is attached to the operation office and the recorded contents are read out. This is automatically transferred and stored in the storage device of the personal computer 4 according to a predetermined procedure. If necessary, the recorded contents can be read and confirmed by the display device 5. While viewing the display device 5, the personal computer 4 can be operated to perform analysis processing or statistical processing. The results can be displayed on the display device 5 as a whole or individually, and can be printed and output as an analysis report 6.

  Here, the feature of the present invention resides in one method of analysis processing for reading this record and analyzing it. In other words, the company (or the operation manager) wants many drivers to drive the vehicle as smoothly as possible and to make the fuel consumption economical. In particular, when driving on a highway, we would like to avoid meaningless driving operations such as the so-called “wave driving” that changes the speed frequently.

  With reference to FIG. 2, a logical operation embodiment of the present invention will be described. In FIG. 2, the horizontal axis indicates the passage of time, and the vertical axis indicates the vehicle speed of the vehicle. The vehicle speed record shown in Fig. 2 is displayed in a way that is easy to understand for a freight vehicle loaded with a standard load. is there. In this display portion, while the time of about 30 seconds elapses, the vehicle speed of the vehicle is fluctuated up and down between about 75 km / h and about 85 km / h with a period of about 10 seconds. V1, V2, V3,... Are displayed on the top and bottom peak values of the curve indicating the vehicle speed.

  This is a typical form of wavy driving performed by a driver who is not calm but conscious of other vehicles traveling in parallel on the same road surface. Such a driving operation disrupts the flow of the highway, is annoying to other vehicles trying to drive at a safe constant speed, and increases the fuel consumption of the vehicle. It has no meaning.

  The embodiment apparatus of the present invention is a mode for performing vehicle speed information processing during high-speed driving, and automatically calculates that such wave driving has been performed on the vehicle speed record of the recording medium submitted by the driver. It has arithmetic logic to find and display it quantitatively. FIG. 4 is a flowchart showing the procedure of the vehicle speed information processing mode during high-speed traveling.

That is, in the “vehicle speed information processing mode at high speed travel”, a time interval of about 30 seconds is set for the vehicle speed information read from the recording medium 3, and the vehicle speed is V ₀ (for this example) for each time interval. In this case, the vehicle speed data is cut out for a section exceeding 70 km / h), that is, a section where there is a traveling section of an expressway. Then, minute fluctuations in vehicle speed (in this example, 2 km / h or less) are removed from the vehicle speed data. This is a vehicle speed fluctuation that cannot be controlled by the driver, which only complicates statistical processing and has no meaning.

The result is illustrated in FIG. That is, it can be seen that a so-called wave-like operation was performed between the maximum value and the minimum value shown as V1 to V7 in FIG. 3 over the traveling time T (35 seconds). In the embodiment apparatus of the present invention, from this record,
Sv = | V1-V2 | + | V2-V3 | + | V3-V4 | +
= ΣΔV
Is calculated. This is executed for all the driving records of the day recorded on the recording medium, and the cumulative value Sv is obtained as an index indicating the quality of the driver's daily wavy driving.

  Each driver can be presented with an index indicating the quality related to the wave driving. As a result, the operation manager reasonably points out that the target driver specifically performed the wave operation, and the wave operation causes unnecessary fuel consumption and is not preferable from the viewpoint of traffic safety. I will ask for improvement. By using this device, reckless driving such as wave driving can be reasonably prevented and the vehicle can be operated economically. Even if seeking improvement, if the same driver repeats wavy driving again, such as reducing the driver's salary, dismissing the driver, etc., this is a policy issue and the technical content of the present invention There is no direct relationship.

  The present invention can perform skill evaluation for each driver's driving operation by performing the simple statistical processing as described above on the recorded data. With the apparatus and method of the present invention, it is possible to instruct the driver to execute an appropriate high-speed traveling. It can be used for driver management, such as providing incentives to drivers who perform appropriate driving operations. The logic of the present invention is simple and straightforward and is acceptable to many drivers.

The block block diagram of this invention Example apparatus. The figure which shows the example of the wavy operation collected by this invention Example apparatus. The figure explaining the arithmetic processing of this invention Example apparatus. The principal part flowchart explaining the logical processing of this invention Example apparatus.

Explanation of symbols

1 vehicle 2 digital tachometer 3 recording medium 4 personal computer 5 display device 6 analysis report

Claims (4)

Means for calculating a cumulative value (Sv) of fluctuations in vehicle speed over a travel time (T) of interest for a section in which the vehicle speed is equal to or greater than a predetermined value from a time-lapse record of the accelerator pedal operation of the vehicle;
Average value for that cumulative value within that time period Fv = Sv / T ((km / h) / min)
And a means for calculating the wavy operation.   2. The apparatus for evaluating a wavy operation according to claim 1, further comprising means for comparing the average value (Fv) with a standard value prepared in advance for each vehicle type.   For the traveling speed of the vehicle (km / h), the absolute value of the difference between the maximum value and the minimum value of the vehicle speed of the vehicle is integrated over a predetermined time (minutes), and the evaluation value per unit time (eg, (Km / h) / min) is calculated.   For the travel speed (km / h) of a vehicle, the absolute value of the difference between the maximum and minimum values of the vehicle speed of the vehicle is integrated over a predetermined travel distance (km), and an evaluation value per unit distance (example) , (Km / h) / km).

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