JP2017010191A - Traffic information analyzer and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a traffic information analyzer and a computer program that can provide information that a manager can understand easily.SOLUTION: A traffic information analyzer 70 has a controller 77, which includes: a data acquisition part 77a for acquiring a running speed and an engine rotation speed recorded as running information on a vehicle; a calculation part 77b for calculating a gear ratio based on the running speed and the engine rotation speed ; a gear estimation part 77c for estimating the number of stages of a gear used by a crew based on the calculated gear ratio; and a display control part 77d for displaying the frequency of usage of each gear based on the estimated number of stages.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a travel information analysis apparatus and a computer program for analyzing travel information of a vehicle recorded over time by an onboard device mounted on the vehicle.

  2. Description of the Related Art Conventionally, a travel information analysis system that includes an in-vehicle device and a travel information analysis device is known. In a business operator who uses a vehicle, one of the important issues is to promote safe driving for the occupant of the vehicle and prevent an accident in advance. Therefore, for example, an in-vehicle device called “digital tachograph” is used so that the operator can check whether each occupant is performing safe driving on a daily basis or driving that contributes to energy saving.

  The digital tachograph is mounted on a vehicle and automatically records travel information (operation information) such as travel speed and engine speed acquired every predetermined time (for example, 0.5 seconds). Data recorded in the digital tachograph can be read by a travel information analysis device (for example, a personal computer) installed in a sales office through a recording medium, a system such as a cloud, or a network. The manager of the business operator can grasp the travel information by analyzing the travel information collected by the digital tachograph using the travel information analyzer. Thereby, it becomes possible to promote driving that contributes to safe driving and energy saving by grasping the driving details of the occupant.

  In recent years, drive recorders that record video taken by an in-vehicle camera are known, and an in-vehicle device having a combination of these functions has also been proposed.

  For example, Patent Document 1 discloses a digital engine rotational speed recording apparatus. This device calculates the gear ratio based on the vehicle speed and the engine speed. In addition to the vehicle speed information, the gear ratio is recorded as information about the engine speed.

  For example, Patent Document 2 discloses a digital traveling recording system that includes an in-vehicle device that constantly acquires speed data and engine rotational speed data, and a data processing device installed in a sales office. The data processing device acquires speed data and engine speed data, records the shift position during traveling from the two data, and displays information on the shift position in time series. Further, in this data processing device, the fuel consumption during traveling is displayed in time series, and a determination graph indicating whether the fuel consumption is appropriate for the shift position is also displayed.

JP 59-18456 A JP 2003-294482 A

  However, according to the conventional method, although it is possible to grasp the transition of the gear position during traveling, it is difficult to determine information such as whether the driver is driving in consideration of energy saving only by the transition. There's a problem. For this reason, a method of providing information that is easy for the administrator to understand is required.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a travel information analysis apparatus and a computer program that can provide information that can be easily understood by an administrator.

  In order to solve such a problem, the first invention provides a travel information analysis device that analyzes travel information of a vehicle recorded over time by an onboard device mounted on the vehicle. This device includes a data acquisition unit that acquires a travel speed and engine speed recorded as vehicle travel information, a calculation unit that calculates a gear ratio based on the travel speed and engine speed, and a calculated gear ratio. A gear estimation unit that estimates the number of gear stages used in driving the vehicle, and a display control unit that displays the use frequency of each gear according to the number of gear stages based on the calculation result of the gear estimation unit. doing.

  Here, in the first invention, the display control unit may display the correlation between the traveling speed and the engine speed as a scatter diagram, and may display the data points on the scatter diagram in different display modes for each gear. preferable.

  In the first invention, it is preferable that the display control unit displays the use frequency of each gear for each of a plurality of travel speed zones that are divided in advance.

  In the first invention, it is preferable that the display control unit displays the use frequency of each gear during a predetermined traveling period.

  Furthermore, in the first invention, it is preferable that the gear estimation unit statistically processes the gear ratio calculated for all the data acquired by the data acquisition unit to estimate the number of gear stages used in traveling of the vehicle. .

  Moreover, 2nd invention provides the computer program which makes a computer perform the analysis of the driving | running | working information of the vehicle recorded with time by the onboard equipment mounted in a vehicle. The computer program includes a step of acquiring a traveling speed and an engine speed recorded as traveling information of the vehicle, a step of calculating a gear ratio based on the acquired traveling speed and the engine speed, and the calculated gear ratio. For causing the computer to execute a step of estimating the number of gears used in driving the vehicle based on the number of gears and a step of displaying the use frequency of each gear according to the number of gears based on the estimated number of gears belongs to.

  According to the present invention, the number of gears used in traveling of the vehicle is estimated, and the use frequency of each gear is displayed based on the number of gears. Thereby, it is possible to quantitatively grasp the state of the gear used for traveling of the vehicle. Therefore, it is possible to know which gear is used and how much is used in traveling of the vehicle, and it is possible to recognize at a glance information that, for example, there is a tendency to use a lot of low-speed gears. As a result, it is possible to easily grasp whether or not the operation is in consideration of energy saving, and it is possible to provide information that is easy for the administrator to understand.

The block diagram which shows typically the structure of the onboard equipment which concerns on this embodiment. The block diagram which shows typically the structure of the traveling information analyzer which concerns on this embodiment The flowchart which shows the estimation process of the gear stage number by the driving | running | working information analyzer which concerns on this embodiment. Explanatory diagram showing the frequency of use of the gear position displayed on the display

  The travel information analysis system according to the present embodiment includes an in-vehicle device 10 mounted on a vehicle and a travel information analysis device 70 installed in an office that manages the operation of the vehicle.

  FIG. 1 is a block diagram schematically showing the configuration of the vehicle-mounted device 10. The vehicle-mounted device 10 records vehicle travel information (operation information) and is, for example, a digital tachograph. Moreover, this onboard equipment 10 is equipped with the function of the drive recorder together.

  The vehicle-mounted device 10 includes a control unit (CPU: Central Processing Unit) 11, a nonvolatile memory 12, a volatile memory 13, a card interface (I / F) 14, an audio I / F 16, an RTC (Real Time Clock) 17, and an SW input. Unit 21, LCD (Liquid Crystal Display) controller 22, speed / engine rotation I / F 23, speed / engine rotation alarm unit 24, external input I / F 25, analog input I / F 26, external output I / F 27, ETC (Electronic Toll) Collection) _I / F 28, GPS (Global Positioning System) _I / F 32, CAN (Controller Area Network) _I / F 33, communication terminal I / F 34, power supply unit 35, camera I / F 36, and G sensor 37.

  The control unit 11 controls the operation of the vehicle-mounted device 10. The nonvolatile memory 12 stores an operation program executed by the control unit 11, various fixed data necessary for executing the operation program, and the like. The volatile memory 13 is used as a working memory for the control unit 11.

  In this embodiment, the control part 11 will record this information as driving information, if the information inputted through various interfaces is read. For example, the control unit 11 records the traveling speed, the engine speed, and the like on the memory card 40 at regular time intervals (for example, 0.5 seconds). The travel information includes vehicle travel time, travel distance, maximum speed, average speed, overspeed time, overspeed, engine speed overtime and overspeed, sudden start, rapid acceleration, rapid deceleration, idling The control unit 11 further includes information such as time, and can record the information on the memory card 40 at regular time intervals or when certain conditions are satisfied.

  The card I / F 14 has a slot in which a memory card 40 having a non-volatile recording area can be inserted, and has a signal processing function necessary for the control unit 11 to access the memory card 40. The card I / F 14 executes various data processing such as data transfer with respect to the mounted memory card 40. During the recording operation of the vehicle-mounted device 10, the memory card 40 is mounted on the card I / F 14, and travel information collected by the vehicle-mounted device 10 is written to the memory card 40. The written travel information can be read out by the travel information analysis device 70 when the memory card 40 is connected to the travel information analysis device 70.

  A speaker 43 is connected to the audio I / F 16. The RTC 17 is composed of a clock IC (Integrated Circuit) and measures the current time. The control unit 11 identifies the current time based on information from the RTC 17.

  The SW input unit 21 receives ON / OFF signals of various switches (not shown) such as operation start / end. The LCD controller 22 is used to control the display of a liquid crystal display (LCD). A liquid crystal display displays various information on a display screen, and may be provided in the exterior of the housing | casing of the onboard equipment 10, and may be arrange | positioned at the housing front surface.

  A vehicle speed sensor (not shown) and an engine rotation sensor (not shown) mounted on the vehicle are connected to the speed / engine rotation I / F 23, and a speed pulse and a rotation pulse are input. The control unit 11 calculates the traveling speed of the vehicle and the engine speed based on the speed pulse and the rotation pulse. The speed / engine rotation alarm unit 24 is an alarm device such as a lamp (not shown) or a buzzer (not shown), for example, and is controlled by the control unit 11 to warn of an overspeed or an increase in the engine speed.

  The external input I / F 25 receives an ON / OFF signal of an ignition SW (not shown), an ON / OFF signal of a brake SW (not shown), an ON / OFF signal of a blinker SW (not shown), and the like. The Various external signals such as a signal from a distance meter (not shown) that measures the travel distance of the vehicle are input to the analog input I / F 26. Various other signals are output to the external output I / F 27.

  An ETC on-vehicle device (not shown) is connected to the ETC_I / F 28. The GPS_I / F 32 receives GPS data transmitted from GPS satellites via the GPS receiver 41, and outputs the current vehicle position information obtained from the GPS data to the control unit 11.

  Various devices connected to a CAN standard network are connected to the CAN_I / F 33. The communication terminal I / F 34 is connected to a communication terminal module (not shown) that performs wireless communication, and can communicate with the travel information analysis device 70 via a network (not shown). The power supply unit 35 supplies power to each unit of the vehicle-mounted device 10.

  A camera 42 is connected to the camera I / F 36. The camera I / F 36 processes the video signal (signal related to the captured image) output from the camera 42 to generate image data that is a digital image signal. The generated image data is read by the control unit 11.

  The camera 42 is disposed, for example, in the vicinity of the driver's seat in the passenger compartment, and images the front in the traveling direction that can be seen through the front windshield. With this camera 42, the traveling path ahead in the traveling direction of the vehicle, a part of the body of the host vehicle, the preceding vehicle, the oncoming vehicle, and the like are imaged as subjects. The camera 42 can always take an image while the vehicle-mounted device 10 is in operation, repeats the imaging at a constant frame period (for example, 30 frames / second), and sequentially outputs video signals.

  The number of cameras 42 is not limited to one, and a plurality of cameras 42 may be configured. For example, it includes a camera 42 that is arranged at the rear of the vehicle and captures a predetermined area behind the traveling direction.

  The G sensor 37 detects an impact (acceleration) applied to the vehicle and outputs acceleration information to the control unit 11.

  FIG. 2 is a block diagram schematically showing the configuration of the travel information analysis device 70. The travel information analysis device 70 is a device that analyzes the travel information of the vehicle recorded in the vehicle-mounted device 10, and is installed in an office of a business operator that manages the vehicle. The travel information analysis device 70 includes a display 71, an operation unit 72, a map storage unit 73, a gear storage unit 74, a card I / F 75, a communication I / F 76, and a control unit 77.

  The display 71 displays various types of information, and for example, an LCD can be used. The display 71 is controlled by the control unit 77.

  The operation unit 72 includes a pointing device such as a keyboard and a mouse. The operation unit 72 outputs an operation signal corresponding to the operation instruction of the administrator to the control unit 77.

  The map storage unit 73 holds map data including road information in advance in the same way as map data used by a general car navigation device.

  The gear storage unit 74 holds various data necessary for shift position estimation calculation described later.

  The card I / F 75 has a slot in which the memory card 40 can be inserted, and has a signal processing function necessary for the control unit 77 to access the memory card 40. The card I / F 75 executes various data processing such as data transfer with respect to the mounted memory card 40. When the memory card 40 in which the travel information file is recorded by the vehicle-mounted device 10 is inserted into the slot of the card I / F 75, the control unit 77 can read the travel information file from the memory card 40.

  The communication I / F 75 is an interface that communicates with an external device (for example, the vehicle-mounted device 10) via a network or the like wirelessly or by wire.

  The control unit 77 controls the travel information analysis device 70, and a computer including a CPU, a ROM, a RAM, an input / output I / F, and the like can be used. The control unit 77 executes a predetermined operation based on a predetermined computer program stored in the built-in ROM. In relation to the present embodiment, the control unit 77 acquires travel information recorded in the memory card 40 via the card I / F 75, processes the travel information, and displays the processing content on the display 71.

  The control unit 77 includes a data acquisition unit 77a, a calculation unit 77b, a gear estimation unit 77c, and a display control unit 77d when this is functionally grasped.

  The data acquisition unit 77a reads the travel information file from the memory card 40, and thereby acquires the travel speed and the engine speed recorded as the travel information of the vehicle. The travel speed and engine speed acquired by the data acquisition unit 77a are time-series data recorded over time as the vehicle travels.

  The calculator 77b calculates the gear ratio based on the traveling speed and the engine speed. The gear estimation unit 77c estimates the number of gear stages used for traveling of the vehicle based on the calculated gear ratio. Based on the estimation result of the gear estimation unit 77, the display control unit 77d displays the usage frequency of each gear position on the display 71 according to the number of gear stages.

  Hereinafter, the processing operation by the travel information analysis device 70 according to the present embodiment will be described. Here, FIG. 3 is a flowchart showing the estimation process of the number of gear stages by the travel information analyzing apparatus 70 according to the present embodiment. The process shown in this flowchart is called and executed by the control unit 77.

  First, in step 10, the control unit 77 acquires time series data related to the traveling speed and the engine speed recorded in one traveling, and targets all the acquired data (traveling speed and engine speed). Predetermined preprocessing is executed for each data. The preprocessing includes calculation of average speed and average engine speed, and calculation of gear ratio.

  The control unit 77 calculates the average speed and the average engine speed. The average speed is a total of three data: current data to be processed (travel speed), data recorded one time earlier (travel speed) and data recorded one time later (travel speed). Is calculated based on Similarly, the average engine speed is the data to be currently processed (engine speed), the data recorded immediately before this (engine speed) and the data recorded after one (engine speed). The number of rotations) is calculated based on a total of three data. Then, the control unit 77 calculates the gear ratio by dividing the average speed by the average engine speed (gear ratio = average speed / average engine speed). The calculated gear ratio is associated with the data (traveling speed and engine speed) that is the calculation source.

  In step 11, the control unit 77 extracts data that is being accelerated from all the data that has been preprocessed. In this process, for example, data having the following two requirements is extracted as data being accelerated. The first requirement is that the average speed and average engine speed for the data to be extracted exceed the average speed and average engine speed for the data recorded immediately before. Second, the traveling speed of the data to be extracted is within a predetermined speed range.

  In step 12, the control unit 77 stores the data extracted in step 11 in a gear ratio array database prepared in the gear storage unit 74. This gear ratio array database is a database for storing data in association with gear ratios, and a plurality of gear ratio arrays capable of storing data are prepared for each. The number of gear ratio arrays is prepared in consideration of, for example, the maximum number of gear stages provided in the vehicle (for example, 16).

  Specifically, the control unit 77 selects the data extracted in step 11 from those having a small gear ratio, and sequentially stores the data in the first gear ratio array. The upper limit number of data stored in one gear ratio array is calculated so that all the extracted data can be divided into groups corresponding to the number of gear ratio arrays, and data storage work for the first gear ratio array is as follows. This is performed until the number of stored data reaches the upper limit. When the number of data reaches the upper limit value, the control unit 77 stores the next selected data (data having the next largest gear ratio) in the second gear ratio array, and a new storing operation is continued. Similarly, this storing operation is sequentially executed for the remaining gear ratio arrangement.

  In step 13, the control unit 77 refers to the gear ratio array database in the gear storage unit 74 and performs the following processing for each gear ratio array. Specifically, the control unit 77 obtains a standard deviation based on each data (gear ratio) stored in the gear ratio array. Then, the control unit 77 determines the central inclination (traveling speed / engine speed (= gear ratio)) of each data (gear ratio) stored in the gear ratio array and its range. At this time, when the inclinations and ranges of the adjacent gear ratio arrays correspond to each other, these can be combined as the same gear (stage). Through such classification, the number of gear stages used by the occupant is estimated, and the gradient of the gear ratio and its range are determined for each gear. This information is recorded in the gear storage unit 74 as a shift table.

  Then, the control unit 77 refers to the shift table, and determines which slope and range the gear ratio calculated for each data is included, thereby associating the gear ratio of the data with the number of gear stages. be able to. As a result, the control unit 77 can display the usage frequency of each gear based on the estimated number of gears. Here, FIG. 4 is an explanatory diagram showing the frequency of use of the gear position displayed on the display 71. This figure shows a state in which five stages are estimated as gear stages.

  The display area A1 displays the correlation between the traveling speed V and the engine speed Ne as a scatter diagram. In this area A1, the data points P on the scatter diagram are displayed in different colors for each gear. Here, the data areas PA1, PA2, PA3, PA4, and PA5 indicate main areas where data points P corresponding to five stages of gears are concentrated.

  In addition, the display area A2 displays the frequency of use of each gear for each predetermined speed zone that is divided in advance. In this display area A2, for example, the speed band is divided every 5 km / h, and the use frequency of the gear used in each speed band is displayed as a vertical band graph. Also in the display of the display area A2, a different color is given for each gear, and the display color at that time preferably corresponds to the color of the gear displayed in the display area A1.

  Further, the display area A3 displays the use frequency of each gear in all the data, that is, in one traveling period. In this display area A3, the usage frequency of each gear is displayed as a pie chart.

  In the display area A1, by selecting the tab TB1, it is possible to display by color for each gear. On the other hand, by selecting the tab TB2, a simple scatter diagram that does not distinguish colors for each gear. You can switch to display. In the latter display form, for example, a display form in which the appearance frequency of the data point P is distinguished by color can be used. Thereby, the user can arbitrarily switch between the display and the display of the normal scatter diagram according to the use frequency of each gear.

  As described above, according to the present embodiment, the travel information analysis device 70 includes the data acquisition unit 77a that acquires the travel speed and the engine speed recorded as the travel information of the vehicle, and the gear based on the travel speed and the engine speed. A calculation unit 77b for calculating the ratio, a gear estimation unit 77c for estimating the number of gears used in traveling of the vehicle based on the calculated gear ratio, and a use frequency of each gear based on the estimated number of gears. A display control unit 77d for displaying.

  According to this configuration, the number of gears used in traveling of the vehicle is estimated, and the usage frequency of each gear is displayed based on the number of gears. Thereby, it is possible to quantitatively grasp the state of the gear used for traveling of the vehicle. Therefore, it is possible to know which gear is used and how much is used in one run, for example, information that tends to use a lot of low-speed gears can be recognized at a glance. As a result, it is possible to easily grasp whether or not the operation is in consideration of energy saving, and it is possible to provide information that is easy for the administrator to understand.

  In the present embodiment, the display control unit 77d (control unit 77) displays the correlation between the traveling speed and the engine speed as a scatter diagram, and the data points on the scatter diagram are displayed in different display modes for each gear. it's shown.

  According to this configuration, it is possible to display a scatter diagram of the traveling speed and the engine speed in different display modes for each gear. Thereby, since the gear used at each speed is known, it is possible to quantitatively indicate an operation mode in which the low speed gear is pulled to a high speed. As a result, the administrator can easily understand whether or not the operation contributes to energy saving.

  In the present embodiment, the display control unit 77d (control unit 77) displays the use frequency of each gear for each of a plurality of travel speed zones that are divided in advance.

  According to this configuration, it is possible to easily grasp whether or not early shift up is possible. As a result, the manager can easily understand whether or not the operation contributes to energy saving.

  Furthermore, according to the present embodiment, the display control unit 77d (control unit 77) displays the frequency of use of each gear during one traveling period.

  According to this configuration, it is possible to easily grasp the state of the gear used for one operation. As a result, the manager can easily grasp the upshift and downshift habits of the occupant.

  Furthermore, in this embodiment, the gear estimation part 77c (control part 77) statistically processes the gear ratio calculated about all the acquired data, and estimates the gear stage number used by driving | running | working of the vehicle. .

  According to this configuration, the number of gear stages used is estimated from the running data. Therefore, it is not necessary for the administrator to input information on the number of gear stages and the gear ratio according to the vehicle. In particular, when the number of vehicles and types of vehicles owned by the business operator are large, the preliminary data input operation becomes complicated. However, according to the present embodiment, such work can be reduced by estimating the number of gear stages, and user convenience can be improved.

  In the present embodiment, data is analyzed and processed in units of one operation. However, the administrator designates a predetermined traveling period and displays the frequency of use of each gear limited to the data in that period. It may be a thing. Further, in the present embodiment, display is performed by changing the color for each gear, but any form may be used as long as the display is performed in a different display mode for each gear. For example, when the data point P is displayed on the scatter diagram, the plot shape is different for each gear.

  The travel information analysis system according to the present embodiment has been described above, but the present invention is not limited to this embodiment, and various modifications can be made within the scope of the present invention. For example, data exchange between the vehicle-mounted device and the travel information analysis device is performed via a memory card, but may be performed using a communication technique such as wired or wireless. In addition, the travel information analysis system according to the present embodiment can be applied not only to a vehicle that is used by a business operator but also to a wide range of general vehicle users. Furthermore, in this embodiment, the term “display” refers to displaying information on a display device such as a display. In a broad sense, information is displayed on paper by a technique such as printing, or by other techniques. A wide range of methods for visually expressing analysis results is included. Further, a computer program itself that causes a computer to execute analysis processing by the travel information analysis apparatus also functions as part of the present invention.

DESCRIPTION OF SYMBOLS 10 Onboard equipment 11 Control part 40 Memory card 70 Travel information analyzer 71 Display 72 Operation part 73 Map memory | storage part 74 Gear memory | storage part 75 Card I / F
76 Communication I / F
77 control unit 77a data acquisition unit 77b calculation unit 77c gear estimation unit 77d display control unit

Claims (6)

In a travel information analysis device that analyzes travel information of a vehicle recorded over time by an onboard device mounted on the vehicle,
A data acquisition unit for acquiring the traveling speed and the engine speed recorded as the traveling information of the vehicle;
A calculation unit that calculates a gear ratio based on the travel speed and the engine speed;
A gear estimation unit that estimates the number of gear stages used in traveling of the vehicle based on the calculated gear ratio;
Based on the calculation result of the gear estimation unit, a display control unit that displays the frequency of use of each gear according to the number of gear stages;
A travel information analyzing apparatus comprising:   The display control unit displays a correlation between the traveling speed and the engine speed as a scatter diagram, and displays data points on the scatter diagram in different display modes for each gear. 1. The travel information analyzing apparatus described in 1.   The travel information analysis apparatus according to claim 1, wherein the display control unit displays a use frequency of each gear for each of a plurality of travel speed zones that are divided in advance.   The travel information analysis apparatus according to any one of claims 1 to 3, wherein the display control unit displays a use frequency of each gear during a predetermined travel period.   The gear estimation unit statistically processes gear ratios calculated for all data acquired by the data acquisition unit, and estimates the number of gear stages used in traveling of the vehicle. 4. The travel information analyzing device described in any one of 4 above. In a computer program for causing a computer to perform analysis of vehicle travel information recorded over time by an in-vehicle device mounted on a vehicle,
Obtaining a travel speed and an engine speed recorded as travel information of the vehicle;
Calculating a gear ratio based on the acquired traveling speed and engine speed;
Estimating the number of gear stages used in running the vehicle based on the calculated gear ratio;
Displaying the frequency of use of each gear according to the number of gears based on the estimated number of gears;
A computer program for causing a computer to execute.