JPH08329296A - Vehicle operation information gathering and analyzing system - Google Patents

Abstract

PURPOSE: To provide the vehicle operation information gathering and analyzing system that generates an output enabling unnecessary long idling operation, engine racing, etc., that can not be evaluated from only speed variation to easily be analyzed and evaluated. CONSTITUTION: This system is equipped with an on-vehicle device 3 which gathers vehicle operation information by writing data on the speed and engine rotating speed measured at constant intervals of time on a portable storage medium 4 and an analyzing device 5 which reads in the data on the speed and engine rotating speed out of the storage medium 4, finds speed time-series data and engine rotating speed time-series data showing time-series variations in the speed and engine rotating speed at unit intervals of times T0 -TN from the read data on the speed and engine rotating speed, and draws a graph having the found speed time-series data and engine rotating speed time-series data plotted on the same time scale.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle operation information collection / analysis system for collecting and analyzing vehicle operation information including information indicating the speed of a vehicle which changes from moment to moment in the form of digital data. The present invention relates to a vehicle operation information collection / analysis system which, when analyzing information, draws the information on a graph showing changes over time in a predetermined time zone and outputs the graph.

[0002]

2. Description of the Related Art This type of vehicle operation information collection / analysis system is mounted on a vehicle and monitors the time-varying speed and mileage, and converts the signals obtained by this monitoring into digital data. An in-vehicle device that is generally called a digital tachograph that is stored in a storage medium such as a memory card and an office that manages the vehicle are installed, and the digital data in the storage medium that is stored by the in-vehicle device is read, and the read digital data is read. An analyzing device for analyzing and collecting vehicle operation information necessary for vehicle management is configured as shown in FIG.

In the figure, reference numeral 1 is a rotation sensor for inputting a rotation corresponding to the rotation speed of an axle from a transmission 2 of a vehicle, converting the rotation into a pulse signal having a frequency proportional to the rotation speed, and outputting the pulse signal. This is an in-vehicle device that samples and inputs a pulse signal from the sensor 1, calculates an instantaneous speed and a traveled distance, performs a predetermined data compression process, and stores the data. An IC memory card 4, which is a portable storage medium, can be removably attached to the vehicle-mounted device 3. By mounting the IC memory card 4 on the in-vehicle device 3, the speed and distance are stored in the form of digital data.

Further, in the figure, reference numeral 5 is an analysis device installed in an office or the like that manages the operation of the vehicle. To this analysis device 5, the IC memory card 4 removed from the vehicle-mounted device 3 should be mounted. Read the digital data from the IC memory card 4 and save it in a storage medium such as a floppy disk, and analyze the saved digital data to collect vehicle operation information, perform printing and display, and perform digital printing. In order to store data, initialization of the IC memory card 4 mounted on the vehicle-mounted device 3 and used, and storage of setting data and the like are performed.

In the system having the above-mentioned configuration, FIG.
As shown in FIG. 5, the traveling speed that changes with time is drawn on the analysis device 5 side in the form of a graph in which time and speed are plotted on the ordinate and the abscissa, and based on the drawn graph. , Was evaluating the operation status.

[0006]

However, in the above-mentioned conventional system, since the operation status is evaluated only by the speed change, for example, the operation status such as a warm-up operation longer than necessary or an unnecessary idle operation is performed. There was a problem that it could not be analyzed and evaluated with more detailed content.

Therefore, in view of the above-mentioned conventional problems, the present invention provides a vehicle operation information collection / analysis system for collecting and analyzing vehicle operation information in the form of digital data, which shows the running state of the vehicle, which changes from moment to moment. It is an object of the present invention to provide a vehicle operation information collection / analysis system that can easily obtain an output that can be easily analyzed and evaluated even for a warm-up operation that is longer than necessary or unnecessary idle running that cannot be evaluated by itself.

[0008]

In order to achieve the above object, the present invention provides a portable storage medium 4 with data of speed and engine speed measured at regular intervals as shown in the basic configuration diagram of FIG. To the vehicle-mounted device 3 for collecting the vehicle operation information by writing the data of the speed and the engine speed written in the storage medium 4, and based on the read data of the speed and the engine speed, the speed and the engine speed. Of the speed time series data and the engine speed time series data showing time series changes for each unit time T _{0 to} T _N , respectively, and the obtained speed time series data and engine speed time series data are displayed on the same time scale. It is characterized by comprising an analyzing device 5 for drawing a plotted graph.

According to the present invention, the analysis device 5 is
Unit time T₀ ~ T_N Unit time setting means 51b for setting
And is set by the unit time setting means 51b.
The unit time T₀ ~ T_N Time series data for each speed
And the engine speed time series data respectively
I decided to draw a graph. Further, the present invention
The vehicle-mounted device 3 measures the speed data measured at the above-mentioned fixed time intervals.
Data to generate compressed speed data and store the compressed speed data in the storage medium 4.
It has a writing speed data compression means 31A,
The analysis device 5 reads the compressed data read from the storage medium 4.
Speed data expansion means 51A for expanding the speed data, and
The unit time set by the unit time setting means 51b
Interval T₀ ~ T_N According to the speed data expansion means 51A.
The expansion speed data obtained by
Data of the speed written in the storage medium 4
Speed data selection means for selecting either one of the data
51B and the speed data selecting means 51B selects
Set by the unit time setting means 51b from the data
The unit time T₀ ~ T _N Find the speed value per hit
It was decided to plot and draw a speed graph.

According to the present invention, the in-vehicle device 3 is
Equal interval data of engine speed measured at regular intervals
Generate thinned out engine speed data for each
Engine rotation speed data thinning means 3 to be written in a storage medium
1B, the analysis device 5 sets the unit time
The unit time T set by the setting means 51b₀ ~ T _N 
In accordance with the
Jin rpm data and the thinned engine rpm data
Engine data selection method to select either
The stage 51C, and the engine data selecting means 51C selects
From the selected data, the unit time setting means 51b
The set unit time T₀ ~ T_N Engine times per hit
Calculating the number of revolutions and plotting it to draw an engine speed graph
And

Furthermore, the present invention provides the speed time series data.
Is the unit time T₀ ~ T_N Minimum speed V for each_0 min 
~ V_N min And the maximum value V_0 max ~ V_N max And this
Minimum speed V_0 min ~ V_N min And the maximum value V_0 max 
~ V_N max Is the unit time T ₀ ~ T_N Professional for each
I was supposed to be. The present invention also provides the above-mentioned speed time system.
The column data is the unit time T₀ ~ T_N Minimum speed value
V_0 min ~ V_N min And the maximum value V_0 max ~ V_N max From
The minimum value V required_0 min ~ V_N min Is a value other than
, The unit time T₀ ~ T_N Minimum speed V for each_0 min ~
V_N min A value other than is plotted and the unit time is
Interval T₀ ~ T_N First T in₀ And the last T_N At least of
On the other hand, the minimum value V of the speed_{0 mi n} , V_N min Is speed 0
, The minimum value V_0 min , V_N min At zero speed
Some unit time T₀ , T_N The minimum value V of the speed at
_0 min ~ V_N min There is a line connecting values other than
To be plotted.

[0012]

In the present invention, the in-vehicle apparatus 3 is a portable storage medium 4
Based on the speed and engine speed data written in
The analysis device 5 respectively obtains speed time series data and engine speed time series data indicating time series changes of the speed and the engine speed for each unit time T _{0 to} T _N , and further, the obtained speed time series data and engine speed. Since several time series data are plotted on the same time scale respectively, a graph is drawn, so it is not possible to analyze and evaluate only speed time series data.
It is possible to easily analyze and evaluate the warm-up operation that is longer than necessary and unnecessary idle running by looking at the engine speed time series data drawn in the graph together with the speed time series data, In other words, it is possible to obtain an output that facilitates such detailed analysis and evaluation.

The unit that the analysis device 5 has by itself
Unit time T set by the time setting means 51b₀ ~ T
_N Each time the speed time series data and the engine speed
With a configuration that draws a graph that plots series data respectively
By doing this, the unit time T ₀ ~ T_N By changing the setting of
Time suitable for analysis, evaluation, display resolution, etc.
It becomes possible to draw a graph of intervals. Also cars
Speed data written in the storage medium 4 by the mounting device 3
And the speed data compression means 31A of the vehicle-mounted device 3 generated
The compressed speed data is read from the storage medium 4 and the analysis device 5
Speed data expanded by the data expansion means 51A of
Of the unit times set by the unit time setting means 51b.
Time T₀ ~ T_N Depending on the speed data selection means 51B
From the selected data, the unit time setting means 51b is used.
The preset unit time T₀ ~ T_N The speed value per hit
Configure to find, plot, and draw a velocity graph
So, the unit time T of both speed data₀ ~ T_N Time close to
Select the data in the interval and check the error of the graph to be drawn.
It is possible to improve the degree.

Further, the engine speed data written in the storage medium 4 by the in-vehicle device 3 and the thinned engine speed data written in the storage medium 4 by the engine speed data thinning means 31B of the in-vehicle device 3 are stored. Among them, from the data selected by the engine data selecting means 51C, the engine speed per unit time T _{0 to} T _N set by the unit time setting means 51b is obtained and plotted to draw an engine speed graph. Even if
As in the case of the speed data, it is possible to improve the error accuracy of the drawn graph by selecting the data of the time interval closer to the unit time T _{0 to} T _N of the both engine speed data.

The speed time-series data is the unit time T
₀ ~ T_N Minimum speed V for each_0 min~ V_N min And maximum
Value V_0 max ~ V_N max Even the mean or average of the two
Value, or the minimum value V_0 min ~ V_N min Other than
It may be a value or any value, and in particular, the minimum value V_0 min 
~ V_N min When not including, for example, the unit time T₀ ~ T
_N First T in₀ And the last T_N At least one of the
Minimum speed V here _0 min , V_N min Is speed 0
Sometimes the minimum value V_0 min , V_N min Is a zero speed
Time T₀ , T_N Plot location and speed 0 location
By plotting the line connecting
If you actually stop, make sure that the graph at that time is 0 speed
Can be displayed.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows a specific configuration of an on-vehicle device that constitutes a part of the vehicle operation information collection / analysis system common to the first and second embodiments of the present invention. In FIG. 2, the on-vehicle device 3 is a predetermined control program. It has a microcomputer (CPU) 31 that operates according to the above. The CPU 31 has a built-in ROM 31a for storing a control program and a RAM 31b for storing various data for signal processing.

The CPU 31 has an interface (I /
F) A distance pulse signal from the rotation sensor 1 via 32 and an accessory (A) of the ignition (IGN) switch.
A signal indicating the state of the (CC) switch is input, and the IC memory card 4 (corresponding to a storage medium) is detachably connected via a connector (not shown). In addition, 33 is a setting switch for setting a predetermined value or the like according to the type, for calculating the speed, the traveling distance, and the engine speed by the signal from the connected rotation sensor 1, and 34 is an IC. A card detection switch 35 for detecting the insertion of the IC memory card 4 provided in the opening for inserting / removing the memory card 4, a reference numeral 35 denotes information collection by the vehicle-mounted device 3 and writing of the collected information to the IC memory card 4 is completed. This is an end switch that is operated when the IC memory card 4 is ejected from the opening.

In the vehicle-mounted device 3 having the above-described structure, the IC memory card 4 in which the card ID for identifying the card is written is attached, so that the card is inserted into the IC memory card 4. From the operation ID for identifying each operation, which is defined as a period from the operation of the end switch 35 to the operation of the end switch 35, speed and engine speed data time-seriesed in 1-minute units during each operation,
The compressed speed data and the engine speed data every 0.5 seconds are written. For this purpose, the CPU 31 inputs a signal generated by the rotation sensor 1 in accordance with the traveling of the vehicle, processes the signal, measures the traveling speed of the vehicle and the engine speed every 0.5 seconds, and obtains this measurement. The speed data is compressed and written to the IC memory card 4, and the engine speed data obtained by the measurement is written to the IC memory card 4 as it is.

FIG. 3 shows a write format for writing to the IC memory card 4. In FIG.
The writing area of is the card ID writing area 41 and the operation I
D area 42 ₁ to the 42n, compression speed data area 4
3 _{1 to} 43n and engine rotation data areas 44 _{1 to} 44n.

The operation for the vehicle-mounted device 3 to write data in the format shown in FIG. 3 will be described below with reference to the flowchart of FIG. 4 showing the work performed by the CPU 31. C
The PU 31 starts its operation when its power is turned on, and initializes in the first step S1. In the initialization of step S1, various flags described later are set to 0, and areas used for various processes are cleared. Then, it progresses to step S2 and it is determined whether ACC of an IGN switch is an ON state. When the determination in step S2 is YES, the process proceeds to step S3, in which the IC is detected by the state of the card detection switch 34 provided in the opening for inserting / removing the IC memory card 4.
It is determined whether the memory card 4 is inserted.

When the determination in step S3 is YES, the process proceeds to step S4, and it is determined whether an ID OK flag (hereinafter abbreviated as IDOKF) is 1, and when the determination is NO, the process proceeds to step S5. Then, IDOKF is set to 1, and the process proceeds to step S6. Here, a card start process involving reading and writing to the card related to the insertion of the IC memory card 4 is performed, and then the process proceeds to step S7. When the determination in step S4 is YES, steps S5 and S6 are skipped and the process proceeds to step S7.

In step S7, the CPU 31
After performing the clock processing on the clock that keeps the time of year / month / day / hour / minute / second configured in the RAM 31b, the process proceeds to step S8. In step S8, it is determined whether or not 0.5 second has elapsed, and if the determination is YES, the process proceeds to step S9 to calculate the speed based on the distance pulse input from the rotation sensor 1. Then, the process proceeds to step S10, the compression process for the speed calculated in step S9 is performed, and then the process proceeds to step S11. Step S11
In, the engine speed is calculated based on the distance pulse input from the rotation sensor 1.

Then, in step S12, the collected data (engine speed data) about the engine speed calculated in step S11 is created, and then the process proceeds to step S13. The determination in step S8 is N
When it is O, that is, when 0.5 seconds has not elapsed, the above steps S9 to S12 are skipped and the process proceeds to step S13. In step S13, it is determined whether one minute has elapsed, and if this determination is YES, step S13.
Proceeding to 14, the 1-minute time-series speed data indicating the maximum value V _max and the minimum value V _min in one minute of the speed calculated in step S9 is created. Succeedingly, in step S15, 1-minute engine rotation speed time-series data indicating the maximum value M _max and the minimum value M _min in 1 minute of the engine rotation speed calculated in step S11 is created, and then step S1
Proceed to 6. When the determination in step S13 is NO, that is, when one minute has not elapsed, steps S14 and S15 are skipped and the process proceeds to step S16.

In step S16, the distance is counted, and then the process proceeds to step S17 and the end switch 3
It is determined whether or not 5 has been operated. If the determination is NO, the process proceeds to step S18 to display the clock and then returns to step S2.

When the determination in step S3 is NO, that is, it is impossible to write to the IC memory card 4 due to the state of the card detection switch 34 provided in the opening for inserting and removing the IC memory card 4. When it is determined and when the determination in step S17 is YES, that is, when the end switch 35 is operated, it is determined in step S19 whether IDOKF is 1 or not,
When the determination in step S19 is YES, IDOKF is set to 0 in step S20, and the next step S2
After performing the card end processing in step 1, the above step S
Return to 2. When the determination in step S19 is NO, steps S20 and S21 are skipped and the process returns to step S2. When the determination in step S2 is NO, that is, when the ACC of the IGN switch is in the off state, the process proceeds to step S22 to put the CPU 31 in the sleep state and then to step S23, where the same clock processing as in step S7 is performed. In the next step S24, the same determination as in step S2 is made. If the determination in step S24 is NO, the process returns to step S22 and the IG
The ACC of the N switch is turned on and the step S24 is performed.
Steps S22 to S24 are repeated until the determination in step S24 is YES, and when the determination in step S24 is YES, the process returns to step S2.

The compression processing in step S10 is 0.5
The IC memory card 4 in which the speed calculated in step S9 is designated by the address pointer every second
The data is written in the middle address in the direction opposite to the operation ID time-series data from the position where the address is large. As a concrete method of this compression, for example, the one proposed in Japanese Examined Patent Publication No. 3-53673 can be applied. You can By the above operation, in the in-vehicle apparatus 3, compressed speed data and engine speed data as shown in FIG. 3 are written in the IC memory card 4, and these data are read by the analysis apparatus 5 described later. Parsed.

As is clear from the explanation of the flow chart of FIG. 4 described above, the main body 3 of the personal computer 31 of the vehicle-mounted device 3 is
The reference numeral 1a serves as engine speed data thinning means 31B that generates thinned engine speed data by thinning out engine speed data measured at regular intervals at regular intervals and writes the thinned engine speed data in the storage medium 4.

On the other hand, the analysis device 5 common to the first and second embodiments of the present invention installed in a vehicle management office of a transportation company that manages the operation of vehicles is specifically shown in FIG. The personal computer (personal computer) 51 configured as described above operates according to a predetermined program. The personal computer 51 includes a personal computer main body 51a, a keyboard 51b (corresponding to unit time setting means) connected thereto, a CRT 51c, a floppy disk (FD) driver 51d, a printer 51e, and a card reader / writer (R / W) 51f. It is connected.

In this analysis device 5, a floppy disk driver 51d is loaded with a program floppy disk (FD) 51g _{1 in} which an analysis program and the like are stored, and the floppy disk driver 51d is detached from the vehicle-mounted device 3 and mounted on the card R / W 51f. The operation data is read from the read IC memory card 4 and saved in a data floppy disk (FD) 51g ₂ mounted on the FD driver 51d, or the operation data read from the IC memory card 4 is directly analyzed, or The operation data saved once in the data FD51g ₂ is analyzed, and the operation data list, safety management / vehicle management data list obtained as a result of this analysis,
In addition to displaying a list of labor management data, graphs, etc. on the CRT 51c or printing by the printer 51e, initialization and setting data of the IC memory card 4 to be used by inserting into the in-vehicle device 3 for storing operation data, etc. Remember.

In the analyzing apparatus 5 having the above-mentioned configuration, the personal computer main body 51a executes the work of the main routine shown in the flowchart of FIG. That is, the personal computer main body 51a
Is started by mounting the program FD51g ₁ , and the processing menu screen is displayed on the CRT 51c in the first step S31. Then step S32
Then, the process waits for selection by the ten keys on the keyboard 51b.

When the card reading is selected by the ten keys of the keyboard 51b, the process proceeds to step S33 to perform the card reading process of reading the operation data from the IC memory card 4 mounted on the card R / W 51f, and the following step S34. After storing the operation data read in step S35, the process proceeds to step S35 to perform the card initialization process, and then waits for selection by the setting data in step S36.

FD by the ten keys on the keyboard 51b
When reading is selected, the process proceeds to step S37 and FD
After performing the FD reading process of reading the operation data from the data FD 51g ₂ mounted on the driver 51d, the process proceeds to step S36 to wait for the selection by the setting data.

When the card confirmation process is selected by the ten keys of the keyboard 51b, the process proceeds to step S38 and the IC memory card 4 mounted on the card R / W 51f.
Perform card confirmation processing to confirm. Then step S3
The process proceeds to step 9 to perform the FW changing process for changing the free word (FW), the card reusing process is performed in the following step S40, and then the process returns to the menu screen in step S31.

When the personal code registration process is selected by the ten keys on the keyboard 51b, the operation proceeds to step S41, and the operation data is stored in the IC memory card 4 mounted on the card R / W 51f. After performing a personal code registration process of registering (storing) a personal code given to an individual such as an existing crew member, the process returns to the menu screen of step S31. Step S3
When the end is selected in 2, the end process is performed in step S42 to end the operation.

In step S36, the operation data list creation / display process of step S43, step S44
The safety management / vehicle management data list creation / display process, the labor management data list creation / display process in step S45, and the graph creation / display process in step S46 are selected. After execution of steps S43 to S46, step S4
The process proceeds to 7 and waits for selection by the function key of the keyboard 51b.

By selecting with the function key in step S47, the operation data list creation / display processing in step S48, the safety management / vehicle management data list creation / display processing in step S49, the labor management data list creation / display processing in step S50, and step S51. After the graph creation and display process of 1) and the printing process of step S52 are performed, the process returns to step S47, and the process returns to step S31 without selection.

In the graph creation / display process of steps S46 and S51, a data output process for simultaneously drawing the speed graph and the engine speed graph on the CRT 61c or the printer 61e is performed. As an example, a speed graph showing the maximum and minimum values of speed per unit time,
There is a graph in which an engine speed graph showing the average value of the engine speed per unit time is one. With reference to FIG. 8, which shows the flowchart of the subroutine of the graph creating and displaying process according to the first embodiment of the present invention, the operation of creating and displaying the graph using the speed data and the engine speed data as described above is described. The details will be described below.

In the first embodiment according to the flowchart of FIG.
In the graph creation display processing subroutine, the first screen
In step S101, the horizontal axis of the graph is CRT61c
Draw as 1 minute or more per 1 dot in the horizontal direction
Or not. When this judgment is NO,
Then, the horizontal axis of the graph corresponds to 1 dot in the horizontal direction of the CRT 61c.
Or when it is determined that the drawing is done in less than 1 minute,
In step S102, read from the IC memory card 4.
Decompress the compression speed data that has been included and expand every 0.5 seconds.
Is calculated and the corresponding extension is obtained every 0.5 seconds, as shown in FIG.
Long data V₀ ~ V _t And store it in internal memory, then
It proceeds to step S103. Smell in step S103
The decompressed data V obtained in step S102.
₀ ~ V_t Is drawn on the CRT 61c on the horizontal axis (time axis)
Data per unit time (less than 1 minute) determined by the resolution of
Unit time T as shown in FIG.₀ ~ T_N 
Minimum and maximum speed time series data V corresponding to_0 min 
~ V_N min, V_0 max ~ V_N max Get into the internal memory
Pay.

The determination in step S101 is performed by referring to the table stored in the internal memory of the personal computer main body 51a based on the time width of the screen display designated by the ten keys of the keyboard 51b. In this table, as shown in FIG. 11, when one screen of the CRT 61c is 400 × 640 dots vertically and horizontally, the time width of the screen display and the number of display minutes (seconds) per 1 dot in the horizontal direction of the CRT 61c are 1 It is associated with 1 to 1, and as is clear from this table, in this embodiment, when 8 hours or more is designated as the time width of screen display, step S101 is performed.
In the graph, it is determined that the horizontal axis of the graph is to be drawn in increments of 1 minute or more per 1 dot in the horizontal direction of the CRT 61c.
It is determined that the drawing is performed in units of less than a minute.

After that, the process proceeds to step S104 and the IC memory
The corresponding EN every 0.5 seconds read from the memory card 4.
After obtaining the gin rotation speed, as shown in FIG.
The unit time T₀ ~ T_N The maximum engine speed corresponding to
Small and maximum time series data M_0 min ~ M_N min , M_0 
max ~ M_N max As shown in FIG.
Such as unit time T₀ ~ T_N Engine speed corresponding to
Averaged time series data M _0 TYP ~ M_N TYP Got an internal note
Then, the process proceeds to step S107. In addition, the above
Time series data M of the minimum and maximum values of gin speed_0 min ~
M_{N mi n} , M_0 max ~ M_N max Is the engine speed above
Horizontal axis to draw the minimum and maximum values on the CRT 61c
Unit time determined by the resolution of (time axis) (1 minute
It is obtained by converting to the data for each
Time T₀ ~ T_N Engine speed average time series corresponding to
Data M_0 TYP ~ M_N TYP Is, for example, each of these data
It is obtained by finding the intermediate value between the minimum value and the maximum value of.

If the judgment in step S101 is YES,
That is, the horizontal axis of the graph is 1 dot in the horizontal direction of the CRT 61c.
When it is determined to draw in 1 minute or more per
Is the IC memory card 4 in step S105?
1-minute time-series speed data read from CRT61c
Unit determined by the resolution of the horizontal axis (time axis) drawn in
It is converted into data for each time (less than 1 minute) and shown in Fig. 10.
Una, unit time T₀ ~ T_N Minimum speed and maximum speed corresponding to
Time series data V_0 min ~ V_N min , V_{0 ma x} ~ V_N 
max Obtained and stored in the internal memory, and proceed to step S106.
Mu. In the above step S106, the IC memory car
1 minute time series engine speed data read from drive 4
To draw on the CRT 61c as shown in FIG.
Unit time (1 minute determined by the resolution of the horizontal axis (time axis)
(Less than) the time series data of the minimum and maximum engine speed for each
Data M_0 min ~ M_N min , M_0 max ~ M_{N ma x} Got
Furthermore, by finding the intermediate value between the minimum and maximum values,
Then, the unit time T as shown in FIG.₀ ~ T_N Corresponding to
Engine speed averaged time series data M _0 TYP ~ M_N 
TYP Is obtained and stored in the internal memory, and the process proceeds to step S107.
Mu.

In the above step S107, the unit time is
Interval T₀ ~ T_N Register n that specifies the number of
In step S108, in step S101
Use the numeric keypad on the keyboard 51b that was referenced when making the determination.
Whether the time width of the screen display specified by is 4 minutes or not
judge. When the determination in step S108 is YES
Is the decompressed data V in step S109.₀ ~ V_t 
From the unit time T₀ ~ T_N Number of decompressed data V according to₀ 
~ V_N Obtained and stored in the internal memory, of which register n
Data of the number V_n And engine speed averaged time series
Data M_n TYP Are output and plotted respectively.
Then, the process proceeds to step S111. In addition, step S108
If the determination is NO, at step S110
Time system of minimum speed and maximum speed of unit time of register n
Column data V_n min , V _n max And engine speed flat
Averaged time series data M_n TYP And output each
After plotting, the process proceeds to step S111.

In step S111, the register n is incremented, that is, set to n + 1, and then step S11.
In step 2, it is determined whether the register n is equal to N + 1, that is, whether the processing has proceeded to the last data. When the determination in step S112 is YES, the graph creating / displaying process is terminated, and the process returns to the main routine of FIG.
When the determination is NO, the process returns to step S108 and steps S108 to S112 are repeatedly executed.

As is clear from the above description of the flowchart of FIG. 8, the main body 51 of the personal computer 51 of the analysis apparatus 5 is
a is a speed data expansion unit 51A for expanding the compression speed data read from the storage medium 4, the expansion speed data obtained by the speed data expansion unit 51A, and the speed written in the storage medium 4 by the in-vehicle apparatus 3. Speed data selecting means 51B for selecting one of the data according to the unit time T _{0 to} T _N set by the unit time setting means 51b, and unit time setting means 51b.
It functions as an engine data selection unit 51C that selects either one of the engine speed data and the thinned engine speed data written by the in-vehicle apparatus 3 according to the unit time T _{0 to} T _N set by There is.

Therefore, in the first embodiment, the horizontal axis of the graph is
CRT61c laterally less than 1 minute per dot
When drawing with, read from the IC memory card 4.
Decompression data V obtained by decompressing the compression speed data₀ ~ V_t 
From the unit time T₀ ~ T_N Minimum speed and maximum speed corresponding to
Time series data V_0 min ~ V_N min , V_0 max ~ V _N 
max Or the decompressed data V₀ ~ V_N And these are
Minimum speed time series data V_0 min ~ V_N min And maximum speed
Time series data V_0 max ~ V_N max Or each
Is the expanded data V₀ ~ V_N Either one is plotted
Is done. Along with this, read from the IC memory card 4.
From the corresponding engine speed every 0.5 seconds, the unit time
T₀ ~ T_N Minimum and maximum engine speed corresponding to
Time series data of_0 min ~ M_N min , M_0 max ~ M_N 
max Is obtained, and from this, the engine speed is averaged.
Time series data M_0 TYP ~ M_N TYP Is obtained, this en
Jin rotation speed averaged time series data M_0 TYP ~ M_N TYP But,
Minimum speed time series data V_0 min ~ V_N min Or maximum speed
Time series data V_0 max ~ V_N max , Or decompressed data
V₀ ~ V_N Is plotted with.

On the other hand, the horizontal axis of the graph is the horizontal direction of the CRT 61c.
When drawing in 1 minute or more per 1 dot
Is 1 minute time series speed data of IC memory card 4 and 1 minute
Minimum and maximum speed from time series engine speed data
Time series data V_0 min ~ V _N min , V_0 max ~ V_N 
max , And engine speed averaged time series data M_0 TY
P ~ M_N TYP Are obtained respectively, and the time series of these minimum speeds
Column data V_0 min ~ V_{N min} And maximum speed time series data
V_0 max ~ V_N max And the engine speed average
Time series data M_0 TYP ~ M_N TYP And are individually plotted
Is done.

FIG. 7 shows a graph drawn on the CRT 61c when the time width of the screen display is designated to 4 minutes by the ten keys of the keyboard 51b according to the graph creation / display processing subroutine according to the flow chart of FIG. 8 described above. It is a figure. In this graph, the time width of the screen display on the CRT 61c is 4 minutes, and accordingly, the compressed speed data obtained by decompressing the compressed speed data is 0.5 as the data in the IC memory card 4 used for drawing the speed graph. The speed data for each second is selected, and this 0.5 second coincides with the 0.5 second which is the time interval for drawing one dot in the lateral direction of the CRT 61c, as can be seen from the table of FIG. , The speed data every 0.5 seconds, that is, the expansion data V
₀ ~V extension data V ₀ ~V _N corresponding to the unit time T ₀ through T _N of the _t is rendered as the speed raw data by one line (solid line in FIG. 7).

It is to be noted that the time width of screen display is specified to be other than 4 minutes.
If it does, the IC memory card used to draw the speed graph
Decompress the above compression speed data as the data in
Even if the speed data obtained every 0.5 seconds is selected, or
Is the 1-minute time series velocity data on the horizontal axis of the CRT61c
The speed data converted per unit time, which is determined by the performance
Even if it is selected, 1 dot in the horizontal direction of the CRT 61c
The time interval for drawing on the sea bream exceeds 0.5 seconds. others
Therefore, one dot in the horizontal direction (time axis direction) of the CRT 61c
, The minimum speed V within the time width corresponding to the dot_n 
min And maximum speed V_n max Two dots are drawn on the line
This allows the minimum speed V on the CRT 61c._n min When
Maximum speed V _n max The two graphs of
It In this case, the minimum speed V_n min And maximum speed V_n max of
In the two graphs, for example, one is a solid line and the other is a dashed line
However, the graph of the average value of the engine speed is, for example, as shown in FIG.
Make sure to distinguish between the two, such as by using a broken line like
Is desirable.

The above is the unit time T₀ ~ T_N Up to
Large speed and minimum speed time series data V _0 min ~ V_N min ,
V_0 max ~ V_N max For plotting separately
As explained, the maximum speed V of the speed time series data_0 max 
~ V_N max Only the engine speed averaged time series data
M_0 TYP ~ M_N TYP Configure to plot with
It is also possible.

FIG. 13 is a flow chart of a subroutine of the graph creating / displaying process according to the second embodiment of the present invention, showing this case. In this subroutine, step S201 is executed.
In step S206 to step S206, the same processing as step S101 to step S106 in the flowchart of FIG. 8 is performed, and the expanded data V _{0 to} V _t corresponding to every 0.5 seconds shown in FIG. 9 and shown in FIG. Unit time T ₀ ~
Time-series data V ₀ of maximum speed and minimum speed corresponding to T _{N
min ~V N min, V 0 max} ~V N max and, shown in FIGS. 12 and 10, the time-series data M _{0 min} of the maximum value of the engine speed and the minimum value corresponding to the unit time T ₀ through T _N
˜M _{N min} , M _{0 max} ˜M _{N max} , and unit time T ₀
~ Engine speed averaged time series data M corresponding to T _{N
0 TYP to MN TYP} are obtained and stored in the internal memory, and the process proceeds to step S207.

In step S207, the unit time is
Interval T₀ ~ T_N Register n that specifies the number of
In step S208, in step S201
Use the numeric keypad on the keyboard 51b that was referenced when making the determination.
Whether the time width of the screen display specified by is 4 minutes or not
judge. When the determination in step S208 is YES
In step S209, the decompressed data V₀ ~ V_t 
From the unit time T₀ ~ T_N Number of decompressed data V according to₀ 
~ V _N Obtained and stored in the internal memory, of which register n
Data of the number V_n And engine speed averaged time series
Data M_n TYP Are output and plotted respectively.
In the subsequent step S210, the register n is inked.
Liment, that is, n + 1, and then step S21
Go to 1 to see if register n is equal to N + 1
Then, it is determined whether or not the processing has proceeded to the last data. This
If the determination in step S217 is YES, the graph is created.
After finishing the display process, the process returns to the main routine of FIG.
If the determination is NO, return to step S210 and
The steps S210 to S212 are repeatedly executed.

If the determination in step S208 is NO.
In step S212, the unit time T₀ Against
The minimum speed time series data V_0 min Whether is 0
To determine. When the determination in step S212 is YES
To proceed to step S213, V_{0 max} And V_0 min To
With tying, M_0 TYP And plot and step
If the determination in step S212 is no, the process proceeds to step S215.
To step S214, go to V_0 max , M_0 TYP Read
After the protrusion plot, the process proceeds to step S215.

In step S215, register n
Is equal to N, and if this determination is YES
In step S216, the unit time T_N Corresponding to
Minimum speed time series data V_N min Is 0 or not
judge. When the determination in step S216 is YES
Advances to step S217 and V_{N max} And V_N min Conclude
Together with M_N TYP Read out and plot and step S
219, the determination of step S215 and step S2
When each of the 16 determinations is NO, both steps S
Proceeding to step 218, the unit time V of the number in the register n_{n 
mi n} , V_n max , M_n TYP Read out and plot
Proceed to step S219.

In step S219, the register n is incremented, that is, set to n + 1, and then step S2.
In step 20, it is determined whether the register n is equal to N + 1, that is, whether the process has proceeded to the last data.
When the determination in step S220 is YES, the graph creating / displaying process is terminated and the process returns to the main routine of FIG. 6. When the determination is NO, the process returns to step S215 and the steps S215 to S220 are repeatedly executed.

As is clear from the above description of the flowchart of FIG. 10, the main body 5 of the personal computer 51 of the analysis apparatus 5 is
1a is a speed data decompression means 51A for decompressing the compression speed data read from the storage medium 4, decompression speed data obtained by the speed data decompression means 51A, and speeds written in the storage medium 4 by the vehicle-mounted device 3. A speed data selecting means 51B for selecting one of the data according to the unit time T _{0 to} T _N set by the unit time setting means 51b, and a unit time setting means 51.
According to the unit time T _{0 to} T _N set by b,
It functions as an engine data selection unit 51C that selects either one of the engine speed data and the thinned-out engine speed data written by the in-vehicle device 3.

Therefore, in the second embodiment, when the horizontal axis of the graph is drawn at intervals of less than 1 minute per 1 dot in the horizontal direction of the CRT 61c, the compression speed data read from the IC memory card 4 is expanded. Obtained decompression data V _{0 to} V _t
From the time series data V _{0 max} ~V _{N max} of the maximum speed is obtained corresponding to the unit time T ₀ through T _N, with the time series data V _{0 max} ~V _{N max} of the maximum speed is plotted, the unit When the time-series data V _{0 min} and V _{N min} of the first and last minimum speeds in the time T _{0 to} T _N are 0, the corresponding time-series data V _{0 max} and V _{N max of} the maximum speed and 0 are obtained.
Or a line connecting the minimum speed time series data V _{0 min} and V _{N min} is plotted, or instead of these,
Extension data V ₀ ~V _t units were obtained from the time T ₀ through T number of decompressed data V corresponding to _{N 0} ~V _N is plotted. Further, along with this, engine rotation speed averaged time series data M _{0 TYP to} M _{N TYP} is obtained from the corresponding engine rotation speed read from the IC memory card 4 every 0.5 seconds, and this engine rotation speed average is obtained. Time series data M _{0 TYP} ~
M _{N TYP} is the maximum speed time series data V _{0 max to} V _N
Plotted with _max etc.

On the other hand, the horizontal axis of the graph is the horizontal direction of the CRT 61c.
When drawing in 1 minute or more per 1 dot
Is 1 minute time series speed data of IC memory card 4 and 1 minute
Minimum and maximum speed from time series engine speed data
Time series data V_0 min ~ V _N min , V_0 max ~ V_N 
max , And engine speed averaged time series data M_0 TY
P ~ M_N TYP And the maximum speed is the same as above.
Time series data V_{0 ma x} ~ V_N max And engine speed
Averaged time series data M_0 TYP ~ M_N TYP Is plotted
In addition, the unit time T₀ ~ T_N First and last minimum in
Time series data of speed V_0 min , V_N min Is 0
Is the corresponding maximum speed time series data V_{0 ma x} , V_N 
max And the minimum speed time-series data V that is 0_0 min , V
_N min A line connecting and is added and plotted.

Therefore, according to the subroutine of the graph creation display processing according to the flow chart of FIG.
The graph of the maximum speed V _{n max} drawn in T61c is the compressed speed data as the data in the IC memory card 4 used for drawing the speed graph when the time width of the screen display is specified to be 4 minutes by the ten keys of the keyboard 51b. The velocity data every 0.5 seconds obtained by expanding the.
Since 5 seconds coincides with 0.5 seconds which is a time interval for drawing one dot in the lateral direction of the CRT 61c, the same raw speed data as shown in FIG. 7 is obtained.

When the screen display time width is specified to other than 4 minutes, the above-mentioned compressed speed data is obtained by decompressing 0.5 as the data in the IC memory card 4 used for drawing the speed graph. Whether the speed data for each second is selected or the speed data obtained by converting the one-minute time series speed data for each unit time, which is determined by the resolution of the horizontal axis of the CRT 61c, is selected. Of the two graphs drawn by the graph creation and display process of
Only the graph of the maximum velocity V _{n max} excluding the graph of _{n min} is obtained. Moreover, when the minimum speed V _{N min} = 0 corresponding to the final dot in the horizontal direction of the CRT 61c, the drawing position of the maximum speed V _{n max} on the CRT 61c corresponding to this final dot and the horizontal axis of the speed = 0 ( A graph is drawn that includes a line that connects the (time axis) points.

Analysis of the first and second embodiments described above
In the device 5, the engine speed with the time series data of the speed
Data is displayed on the CRT 51c, speed data
Longer than necessary, which cannot be evaluated only by the time series change of
Information such as machine operation and useless emptying will be displayed at the same time.
It is easy to refer to the engine speed data
It can be analyzed and evaluated. Also, the analysis of the second embodiment
According to the device 5, the time series data of the velocity is converted into the maximum value V _0 
max ~ V_N max When displaying only
Time T₀ ~ T_N Unit time T that ends at the beginning and speed 0
₀ ~ T_N It is possible to display the last of the inside as 0 on the graph.
The speed data display without any discomfort.
It

In the above description of each embodiment, the maximum value and the minimum value of the unit time are calculated from the expanded speed data,
It is arranged to plot an average value of both of them or an intermediate value of both of them, but instead of this, for example, a value calculated by weighting the maximum value and the minimum value with unique coefficients may be plotted. You may Similarly, the time series data of the engine speed is not limited to plotting an average value between the maximum value and the minimum value, as in the above-described embodiments, so that the maximum value and the minimum value can be distinguished from each other. Both can be plotted, or as in the velocity data above,
A value calculated by weighting the maximum value and the minimum value with a unique coefficient is plotted, or a line connecting the minimum value and the maximum value when the minimum value is 0 and the maximum value are plotted. And so on.

Further, in the illustrated embodiment, the unit times T _{0 to} T
The speed 0 in _N is indirectly obtained by finding the minimum value thereof, but the speed 0 may be directly obtained without finding the minimum value of the speed. In this case, 1-bit data indicating the presence or absence of speed 0 may be attached to the maximum value or the average value and the data may be stored. further,
Of course, for each of the speed data and the engine speed data, when the minimum value is 0, the line connecting the minimum value and the average value and the average value may be plotted.

[0063]

As described above, according to the present invention, a vehicle-mounted device that collects vehicle operation information by writing data of speed and engine speed measured at regular intervals in a portable storage medium, and the storage. The speed and engine speed data written in the medium is read, and the speed time series data and the engine speed time series data showing the time series changes in the speed and engine speed are read from the read speed and engine speed data. And an analyzer for drawing a graph in which the speed time-series data and the engine speed time-series data thus obtained are respectively plotted on the same time scale.

Therefore, by referring to the engine speed data displayed at the same time, when a graph is drawn in the analysis device based on the speed data collected in the vehicle-mounted device, it does not appear directly in the speed graph. As described above, it is possible to display the situation such as the warm-up operation for a long time and the unnecessary empty running on the graph, and to analyze and evaluate it easily.

Further, according to the present invention, the analyzing device is
It has a unit time setting means for setting the unit time, and draws a graph plotting the speed time series data and the engine speed time series data for each unit time set by the unit time setting means. Since the configuration is adopted, it is possible to draw the graph of the time interval suitable for the time zone of analysis and evaluation, the resolution of display, etc. by changing the setting of the unit time.

Further, according to the present invention, the vehicle-mounted device has speed data compression means for compressing speed data measured at the constant time intervals to generate compressed speed data and writing the compressed speed data in the storage medium. The analysis device expands the compressed speed data read from the storage medium by a speed data expansion means, and the expansion time obtained by the speed data expansion means according to the unit time set by the unit time setting means. Speed data and speed data selection means for selecting any one of the speed data written in the storage medium by the vehicle-mounted device, and from the data selected by the speed data selection means, Since the speed value per unit time set by the unit time setting means is obtained and plotted to draw a speed graph, both speed data are Select data towards closer time interval in a unit time of, it is possible to improve the error accuracy of the graph to be drawn.

According to the present invention, the on-vehicle device is
The engine rotation speed data thinning means for generating thinned engine rotation speed data by thinning out the data of the engine rotation speed measured at the constant time intervals at regular intervals and writing the data in the storage medium, the analysis device, And an engine data selecting means for selecting one of the engine speed data and the thinned engine speed data written by the in-vehicle device according to the unit time set by the unit time setting means. Since the engine speed per unit time set by the unit time setting means is obtained from the data selected by the engine data selecting means and plotted to draw an engine speed graph, both engine speed data are obtained. Select the data with a time interval closer to the unit time from among them to improve the error accuracy of the drawn graph. It can be.

Further, according to the present invention, the speed time series data is the minimum value and the maximum value of the speed for each unit time, and the minimum value and the maximum value of these speeds are plotted for each unit time. With this configuration, the amount of display information of speed data can be increased.

Further, the speed time series data is a value other than the minimum value obtained from the minimum value and the maximum value of the speed for each unit time, and a value other than the minimum value of the speed for each unit time is plotted. In addition, at least one of the beginning and the end of the unit time, when the minimum value of the speed is speed 0, other than the minimum value of the speed in the unit time when the minimum value is speed 0. The line connecting the value and the point of zero velocity is further plotted. Therefore, for example, when the minimum value of the speed there is 0, as in the case where the beginning or the end of the unit time is the start and end of the operation of the vehicle, the minimum value is the speed 0. By further plotting the line connecting the plot location and the zero speed location in the unit time, if there is an actual stop time even at an instant, the graph at that time can be surely displayed as the zero speed. it can.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of a vehicle operation information collection / analysis system according to the present invention.

FIG. 2 is a block diagram showing a specific configuration of an in-vehicle device that constitutes a part of a vehicle operation information collection / analysis system common to the first and second embodiments of the present invention.

FIG. 3 is a diagram showing an example of a format of data written in an IC memory card by the in-vehicle device of FIG.

FIG. 4 is a flowchart showing tasks performed by a CPU of the vehicle-mounted device in FIG. 2;

FIG. 5 is a block diagram showing a specific configuration of an analysis device which constitutes a part of a vehicle operation information collection / analysis system common to the first and second embodiments of the present invention.

6 is a flowchart showing a main routine of work performed by a personal computer main body of the analysis apparatus of FIG.

7 is an explanatory diagram showing an example of a graph drawn by executing the flowchart of FIG.

FIG. 8 is a flowchart showing a subroutine of graph creation display processing in the flowchart of FIG. 6 according to the first embodiment of the present invention.

9 is an explanatory diagram of decompression data corresponding to every 0.5 seconds obtained from the read data from the IC memory card of FIG.

10 is an explanatory diagram of a minimum speed, a maximum speed, and an average engine speed per unit time obtained from the expanded data of FIG. 9 and the read data from the IC memory card of FIG.

11 is a table showing the correlation between the time width displayed on the CRT of the analysis device of FIG. 5 and the display minutes (seconds) per horizontal dot.

12 is an explanatory diagram of the minimum engine speed and the maximum engine speed per unit time obtained from the read data from the IC memory card of FIG.

FIG. 13 is a flowchart showing a subroutine of graph creation display processing in the flowchart of FIG. 6 according to the second embodiment of the present invention.

FIG. 14 is an explanatory diagram showing the schematic configuration of a general vehicle operation information collection / analysis system of the related art in some blocks.

15 is an explanatory diagram showing an example of a velocity graph drawn by the analysis device in FIG.

[Explanation of symbols]

3 In-vehicle device 31 CPU 31A speed data compression means 31B engine speed data thinning means 4 storage medium 5 analysis device 51A speed data expansion means 51B speed data selection means 51C engine data selection means 51a personal computer main body 51b unit time setting means (keyboard) T _{0 to} T _N Unit time V _{0 max to} V _{N max} maximum speed value V _{0 min to} V _{N min} minimum speed value

Claims (6)

[Claims] 1. An in-vehicle device that collects vehicle operation information by writing data of speed and engine speed measured at regular intervals in a portable storage medium, and speed and engine speed written in the storage medium. Data is read, speed time series data and engine speed time series data showing time series changes of these speed and engine speed per unit time are obtained from the read data of speed and engine speed, respectively, and obtained. An analysis device for drawing a graph in which speed time series data and engine speed time series data are plotted on the same time scale, respectively, and a vehicle operation information collection and analysis system. 2. The analysis device has unit time setting means for setting the unit time, and the speed time series data and the engine speed for each unit time set by the unit time setting means. The vehicle operation information collection and analysis system according to claim 1, wherein a graph in which time series data is plotted is drawn. 3. The on-vehicle device includes speed data compression means for compressing speed data measured at the constant time intervals to generate compressed speed data and writing the compressed speed data to the storage medium. Speed data decompression means for decompressing the compression speed data read from the storage medium, decompression speed data obtained by the speed data decompression means according to the unit time set by the unit time setting means, and Speed data selecting means for selecting any one of the speed data written in the storage medium by the vehicle-mounted device, and by the unit time setting means from the data selected by the speed data selecting means. The vehicle operation information collection and analysis system according to claim 2, wherein a speed value per unit time that has been set is obtained and plotted to draw a speed graph. 4. The on-vehicle device has an engine speed data thinning means for generating thinned engine speed data by thinning out the engine speed data measured at the constant time intervals at regular intervals and writing the thinned engine speed data in the storage medium. According to the unit time set by the unit time setting means, the analysis device selects one of the engine speed data and the thinned engine speed data written by the in-vehicle device. And an engine data selecting means for selecting, and from the data selected by the engine data selecting means, the engine speed per unit time set by the unit time setting means is obtained and plotted to draw an engine speed graph. The vehicle operation information collection and analysis system according to claim 2. 5. The speed time series data is a minimum value and a maximum value of the speed for each unit time, and the minimum value and the maximum value of these speeds are plotted for each unit time. The vehicle operation information collection and analysis system described in 3 or 4. 6. The speed time series data is a value other than the minimum value obtained from the minimum value and the maximum value of the speed for each unit time, and a value other than the minimum value of the speed for each unit time is plotted. In addition, at least one of the beginning and the end of the unit time, when the minimum value of the speed is speed 0, other than the minimum value of the speed in the unit time when the minimum value is speed 0. The vehicle operation information collection / analysis system according to claim 1, 2, 3, 4, or 5, wherein a line connecting the value and the point of zero speed is further plotted.