JP2549773Y2 - Vehicle operation data collection device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle operation data collecting apparatus mounted on a vehicle and used, and particularly has a history of acceleration and deceleration of the vehicle which is effective for grasping a driving situation of a driver. The present invention relates to a vehicle operation data collection device that collects vehicle operation data.

[0002]

2. Description of the Related Art History information of acceleration and deceleration of a vehicle is vehicle operation data that is effective in grasping the driving situation of a driver and managing fuel consumption, safe driving, and the like. As an example of an apparatus for collecting such vehicle operation data, conventionally, for example, 0.
The acceleration is obtained every 5 seconds, and it is determined where the obtained acceleration falls into a plurality of ranks determined in advance according to the magnitude. Based on the determination result, a counter provided for each rank is determined. There has been proposed a technique in which acceleration frequency information is collected by incrementing the information.

[0003] The collected vehicle operation data is analyzed by an operation manager by an analyzer. The analyzer converts the appearance frequency of each rank into a graph expressed as a percentage and displays the result on a display device such as a CRT.

[0004]

In the above-described apparatus, when the vehicle travels only on the highway and the vehicle speed hardly changes as shown in FIG. 14, only the increment of the low-rank counter is performed. A graph obtained by converting this into a graph is biased as shown in FIG. On the other hand, as shown in FIG. 16, when the vehicle travels on a general road that repeatedly stops and starts at a traffic light, a graph as shown in FIG. 17 is obtained.

[0005] As described above, the collected vehicle operation data is greatly affected by the condition of the road on which the vehicle travels. When the vehicle travels on a large number of general roads, the frequency of high-rank acceleration increases, and the vehicle travels frequently on the highway. In that case, the frequency of low-rank acceleration increases. Therefore, the driver of a vehicle that ran a high-ranked vehicle with high acceleration performs more economical driving and safer driving than the driver of a vehicle that ran a lot of highways and ran a lot of low-rank vehicles. It is not appropriate to judge that the data has not been collected, and it is difficult to say that the data collected by this device can be used very effectively.

Therefore, in view of the above-mentioned conventional problems, the present invention collects vehicle operation data including acceleration / deceleration history information, which is effective for grasping the driving situation of the driver without being influenced by road conditions. It is an object of the present invention to provide a vehicle operation data collection device capable of performing such operations.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a vehicle operation data collection device according to the present invention has a first feature.
As shown in the basic configuration diagram of FIG. 1, in a vehicle operation data collection device that records and collects vehicle operation data having history information of acceleration and deceleration of a vehicle in a storage medium 4, the vehicle operation data collection device corresponds to each of predetermined acceleration / deceleration ranks. Multiple times recording area 4
A recording medium 4 having 4a, 44b, a conversion means 2a for converting the acceleration / deceleration of the vehicle into one of a plurality of predetermined acceleration / deceleration rank data, and a stop detection means 2b for detecting the stop of the vehicle
A rapid deceleration detecting means 2c for detecting rapid deceleration of the maximum rank or a rank close thereto, and a vehicle speed decrease detecting means 2d for detecting that the vehicle speed continuously decreases by a predetermined value from the start of deceleration.
And from the start of running of the vehicle or the end of the previous cycle to the detection by the stop detecting means 2b, the sudden deceleration detecting means 2c or the vehicle speed drop detecting means 2d, is defined as one cycle. Maximum acceleration / deceleration rank detecting means 2e for detecting the maximum acceleration / deceleration rank in the converted acceleration / deceleration rank data, and the number of times of recording medium 4 corresponding to the maximum acceleration / deceleration rank detected by the maximum acceleration / deceleration rank detection means 2e A writing unit 2f for incrementing the data in the recording areas 44a and 44b.

[0008]

In the configuration shown in FIG. 1, the vehicle stop detecting means 2b
Detects that the vehicle has stopped, when the sudden deceleration detecting means 2c detects sudden deceleration of the maximum rank or a rank close thereto, or when the vehicle speed drop detecting means 2d continuously decreases the vehicle speed by a predetermined value from the start of deceleration. When this is detected, it is regarded as one cycle from the start of running of the vehicle or the end of the previous cycle. The maximum acceleration / deceleration rank among the acceleration / deceleration rank data converted by the conversion means 2a during this one cycle is detected by the maximum acceleration / deceleration rank detection means 2e, and the maximum acceleration / deceleration rank detected by the maximum acceleration / deceleration rank detection means 2e is detected. The number-of-times recording area 44a of the recording medium 4 corresponding to the acceleration / deceleration rank,
The data of 44b is incremented by the writing means 2f.

[0009] As described above, not only every fixed time, but also every time a stop is detected, a sudden deceleration of the maximum rank or a rank close thereto is detected, or a continuous decrease in vehicle speed from the start of deceleration is detected. Since the vehicle operation data having the history information of the acceleration and deceleration of the vehicle is collected by incrementing the maximum acceleration / deceleration rank of one cycle up to that time, except when the vehicle is stopped, it is generally used when driving is not good. Acceleration / deceleration history information that can occur without distinction between roads and expressways and is not significantly affected by road conditions can be collected.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows one embodiment of a vehicle operation data collection device according to the present invention configured to collect vehicle operation data including time-varying vehicle speed data, mileage, and the like, in addition to history information of sudden acceleration and sudden deceleration. Here is an example.

In FIG. 1, a vehicle operation data collection device is connected to a transmission of a vehicle by connection means (not shown), and a travel sensor 1 for generating a travel signal having a frequency corresponding to the vehicle speed as the vehicle travels. A microcomputer (CPU) 2 for sampling and inputting a traveling signal from a sensor 11, a calendar and a clock 3 for generating time information representing real time, and a card connector 5 for inserting and removing an IC memory card 4 as a recording medium. And

The CPU 2 has a built-in ROM 21 storing a control program and the like, and a RAM 22 having a data area for storing various data and a work area used for the operation of the CPU 2, and operates according to the control program in the ROM 21. Do various jobs.

As shown in FIG. 3, the IC memory card 4 has a card ID area 41 for writing a card ID for identifying the card, and various setting data D written by an operation data analyzer described later. A setting data area 42 for storing _S , an operation data area 43 for writing collected vehicle speed and traveling distance data, and an option data area 44 are formed. In the setting data area 42, ranks 1 to 8 as shown in FIG.
(M / sec ² ) and deceleration rank data (m / sec ² ) of ranks 1 to 8 are stored.

As shown in FIG. 5, the option area 44 stores the vehicle operation data relating to the acceleration / deceleration as the number of appearances of the acceleration / deceleration rank, so that eight acceleration rank counters RUC1 to RUC8 have areas 44a and 8c. Area 44 of two deceleration rank counters RDC1 to RD8
b.

On the other hand, in the RAM 22 in the CPU 2, FIG.
As shown in, storage area 22a of the setting data D _S, storage area 22b of the first flag F1, the previous vehicle speed V _T-1 of the storage area 22c, a maximum speed V _max of the storage area 22 d,
Maximum acceleration rank RU _max storage area 22e, a storage area 22f of the maximum deceleration RD _max, such storage area 22g of the end flag F2 is formed. In the setting data storage area 22a, the same 1 to 8 acceleration rank data and 1 to 8 deceleration rank data as shown in FIG. 4 are read from the IC memory card 4 and stored.

One of the tasks performed by the CPU 2 is to calculate the instantaneous speed and travel distance by performing calculations based on the travel signal input from the travel sensor 1, and to calculate the instantaneous speed and travel distance obtained by this calculation into digital data. The data is recorded in the operation data area 43 of the IC memory card 4 in the form.

The other work performed by the CPU 2 is to calculate acceleration and deceleration based on the running signal at predetermined time intervals by calculation, and the maximum acceleration and deceleration in one cycle that is established under predetermined conditions corresponds to any rank. Is determined based on the acceleration rank data and the deceleration rank data, and the acceleration rank counter 4 in the option area 44 corresponding to the rank is determined.
4a, the deceleration rank counter 44b is incremented.

The above-mentioned one cycle includes a period from the start of traveling of the vehicle to a stop as shown in FIG. 7 and a sudden stage of rank 7 or 8 from the beginning of the traveling of the vehicle or the end of the preceding one cycle as shown in FIG. Until the vehicle is decelerated and accelerated again, the vehicle speed at the start of deceleration continues from the start of the running of the vehicle or from the end of one previous cycle as shown in FIG.
km / h is reduced and then accelerated again. The reason why the deceleration is determined to be the end is that the acceleration of the vehicle greatly differs depending on the vehicle type, but the deceleration hardly differs depending on the vehicle type.

In the above configuration, the CPU 2 samples the running signal in accordance with the sampling timing signal, calculates the instantaneous speed and the running distance based on the sampled running signal, and obtains the IC inserted in the card connector 4. Operation data for writing to the memory card 4 is formed. If the operation data is data immediately after the start of the operation, the CPU 2 also writes data such as the operation start time based on the time information when the calendar and the clock 3 are generated as the operation ID for identifying the operation.

When the CPU 2 determines that one cycle has ended, the rank counters 44a and 44b corresponding to the maximum acceleration and maximum deceleration ranks of the cycle are incremented.

The vehicle operation data written and collected in the IC memory card 4 by the above-mentioned vehicle operation data collection device is transmitted to the RW 11 connected to the analysis device 10 comprising a personal computer as shown in FIG.
When the memory card 4 is inserted, the data is read by the analyzer 10 and analyzed.

The analysis device 10 sends the F
When D12 is mounted, a menu is displayed on the CRT 10b. This menu includes card initialization processing, termination processing,
When the FD reading process and the card reading process are performed and the initialization process is selected, the IC memory card 4 mounted on the RW 11 is initialized.
Write the acceleration and deceleration rank data in the setting data area of. Reference numeral 10c denotes a keyboard which is used when instructing the operation of the analyzer 10 or when preparing setting data.

The operation of the vehicular digital operation data recording device and the analyzing device 10 has been described briefly, and details thereof will be described below with reference to the flowcharts of FIGS.

FIG. 11 is a flowchart showing the work executed by the CPU 2 of the vehicular digital operation data recording apparatus in accordance with the control program. The CPU 2 starts operation by turning on the power, and performs initialization in the first step S1. Initial flag F1 in RAM 22
Storage area 22b, storage area 22 for end flag F2
g is set to 0, setting data D _S , previous vehicle speed V _T−1 , maximum vehicle speed V _max , maximum acceleration rank RU _max ,
Each of the storage areas 22b to 22f of the maximum deceleration RD _max is cleared.

Next, the process proceeds to step S2, where it is determined whether or not the ignition (IG) switch of the vehicle is turned on based on a signal from an IG detection circuit (not shown). If the IG switch is off, C is determined in step S3.
PU2 is put into the sleep state, and clock processing is performed in the next step S4. After that, in step S5, IG
It is determined whether or not the switch has been turned on.
Steps S3 to S5 are repeatedly executed until.

If the determination in step S5 is YES, the process returns to step S2, and proceeds to step S6 via step S2. In step S6, information for determining whether the IC memory card 4 is in a recordable state by various sensors (not shown) is input. After that, clock processing is performed in step S7, and then step S8
Then, it is determined whether or not the IC memory card 4 is in a recordable state based on the information input in step S6.

If the determination in step S8 is YES, the process proceeds to step S9, where it is determined whether or not the initial flag is 1. Advance determination of the step S9 is to step S10 if NO, the here reads the setting data D _S from the IC memory card 3, the read setting data D _S
And stores in the storage area 22a of the setting data D _S in the RAM 22. Then, the process proceeds to step S11, where the start time and the ID are set in the operation data area 33 of the IC memory card 4.
Write to.

Thereafter, the process proceeds to step S12, where the initial flag F is set to 1 in step S12. Subsequently, the process proceeds to step S13, in which the speed data is compressed and recorded, and the traveling distance is recorded in step S14, and then the process returns to step S2.

If it is determined in step S8 that the IC memory card 4 is not in a recordable state, the process proceeds to step S16, where it is determined whether or not the first time flag F1 is 1, and this determination is NO. In the case of, the process returns to step S2. If the determination in step S16 is YES, the initial flag F1 is set to 0 in step S17, and thereafter, the process proceeds to step S18 to perform an IC memory card end process, and then returns to step S2.

In the course of the above-described processing, acceleration / deceleration processing S20 is performed by a timer interrupt every 0.5 seconds. Specifically, as shown in the flowchart of FIG. 12, first, the process proceeds from the calculated vehicle speed V _T in the first step S20a to step S20b, where whether or not the vehicle speed V _T calculated in step S20a is 0, That is, it is determined whether the vehicle is stopped. By executing step S20b, the CPU 2 functions as the stop detecting means 2b for detecting the stop of the vehicle.

[0031] When the vehicle is stopped is determined in step S20b of NO obtains a difference ΔV between the previous vehicle speed V _T-1 and the current vehicle speed V _T proceeds to step S20c, this proceeds to the next step S20c vehicle speed V _T is stored in the storage area 22c of the previous vehicle speed VT _-1 . Then, the process proceeds to step S20d, where ΔV obtained in step S20c is stored in RAM2.
The rank data stored in the storage area 22a of the setting data D _S in 2 is converted to acceleration and deceleration rank R _T. By executing step S20d, the CPU 2 functions as a conversion unit 2a that converts the acceleration / deceleration of the vehicle into one of a plurality of predetermined acceleration / deceleration rank data. Thereafter, the process proceeds to step S20e, where it is determined whether ΔV is greater than 0, that is, whether the vehicle is in an acceleration state or a deceleration state.

[0032] NO is determined in step S20e, that is, the maximum velocity V of the vehicle speed V _T which is calculated in step S20a proceeds to step S20f when during acceleration
_It is stored in the _max storage area 22d. Then step S
The process proceeds to 20g, where it is determined whether or not the end flag F2 is 1. If the determination in step S20g is NO, the process proceeds to step S20h. In step S20h, the rank stored in the storage area 22e of the maximum acceleration rank RU _max determines whether less than the rank R _T converted in step S20d.

The returns from stores acceleration rank R _T to the storage area 22e of the maximum acceleration rank RU _max was converted in step S20d in step S20i when the determination in step S20h is YES in the flowchart of FIG. 11, the determination in step S20h Is NO, that is, the acceleration rank R converted in step S20d
_{If T} is not the maximum, step S20i is skipped and the process returns to the flowchart of FIG. 11, and the work from step S20a is repeated by another timer interrupt.

When the determination in step S20e is YES, that is, when deceleration is performed, step S20j
The process proceeds to determine where whether the difference between the vehicle speed V _T which is calculated by the vehicle speed and the step S20a stored in the storage area 22d of the maximum speed V _max is 20 km / h or more. By executing step S20j, the CPU 2 functions as a vehicle speed reduction detecting unit 2d that detects that the vehicle speed has continuously decreased by a predetermined value from the start of deceleration. When this determination in step S20j is NO determines whether acceleration No. R _T converted in step S20d proceeds to step S20k is of 7 or 8 deceleration rank. By executing the step S20k, the CPU 2 functions as a rapid deceleration detecting means 2c for detecting a rapid deceleration of the maximum rank or a rank close thereto.

[0035] Step S20k maximum deceleration No. RD _max deceleration rank stored in the storage area 22f of either converted deceleration smaller than No. R _T in step S20d proceeds to step S20l when determination also of NO whether Is determined. Step when the stored acceleration and deceleration rank R _T converted in step S20d proceeds to step S20m in storage area 22f of the maximum deceleration rank RD _max when the judgment at step S20l YES, the determination of step S20l NO Skip S20m and return to the flowchart of FIG. If the determination in step S20j or step S20k is YES, the process proceeds to step S20n, sets the end flag F2 to 1, and then proceeds to step S201.

Thereafter, when the vehicle stops running and the determination in step S20b is YES, step S20b is executed.
Proceeds to 20o, storage area where the maximum vehicle speed V _max 22
It is determined whether or not the value stored in d is 0. When the determination in step S20o is YES, the process immediately returns to the flowchart in FIG. RA determination in step S20o is when the NO corresponding to the rank is stored in the storage area 22f, and 22e of the maximum deceleration rank RD _max and maximum acceleration No. RU _max proceeds to step S20p
Deceleration counter 44b and acceleration counter 44a in M22
Is written to increment. Proceeding to the next step S20q, the storage areas 22f and 22e of the maximum deceleration rank RD _max and the maximum acceleration rank RU _max are cleared, and the end flag F2 is set to 0 in the next step S20r.
Then, the process returns to the flowchart of FIG.

When the determination in step S20g is YES, that is, when the end flag F2 is 1, step S20g is executed.
The process proceeds to 20s, where writing is performed to increment the deceleration counter 44b and the acceleration counter 44a in the RAM 22 corresponding to the ranks stored in the storage areas 22f and 22e of the maximum deceleration rank RD _max and the maximum acceleration rank RU _max , respectively. Proceeding to the next step S20t, the maximum deceleration rank RD _max and the maximum acceleration rank RU _max
Are cleared, the end flag F2 is set to 0 in the next step S20u, and the process returns to the flowchart of FIG.

The CPU 2 executes the above steps S20i and S20i.
0l, as the maximum acceleration / deceleration rank detecting means 2e for detecting the maximum acceleration / deceleration rank of the acceleration / deceleration rank data converted during one cycle from the start of the vehicle running or the end of the previous cycle, at steps S20p and S20
The execution of s serves as a writing unit 2f for incrementing the data of the number-of-times recording areas 44a, 44b of the recording medium 4 corresponding to the maximum acceleration / deceleration rank detected by the maximum acceleration / deceleration rank detection unit 2e.

As described above, according to the embodiment of the present invention, from the start of the vehicle or the end of the previous one cycle to the stop, from the start of the vehicle or the end of the previous one cycle, the deceleration rank 8 or 7 One cycle is defined as a cycle until the vehicle is suddenly decelerated and accelerated again, or from the start of traveling of the vehicle or from the end of the previous one cycle to the start of deceleration until the vehicle speed continuously decreases by a predetermined value and is accelerated again. The maximum acceleration / deceleration rank is detected, and the rank counters 44a, 44a in the IC memory card 4 corresponding to the maximum acceleration / deceleration rank are detected.
Acceleration / deceleration history information is collected by incrementing 44b.

Therefore, as compared with the conventional one in which the appearance frequency of the acceleration / deceleration rank is recorded at regular intervals, except when the vehicle is stopped, when driving is not good, it occurs without distinction between the ordinary road and the highway. In addition, it is possible to collect acceleration / deceleration history information that well reflects a driving situation that is not significantly affected by road conditions.

FIG. 13 is a flowchart showing the work performed by the personal computer (personal computer) constituting the analyzer 10. The operation of the personal computer starts by starting the MS-DOS, and in the first step S30a, the processing menu is displayed on the CRT 10b. indicate. At step S30b, the operator waits for a selection operation using the function keys of the keyboard 10c performed by looking at the menu display, and when a selection is made by operating a specific function key, the selected processing is performed in accordance therewith.

When the card initialization process is selected,
In step S30c, the IC memory card 3 is initialized, and at this time, the setting data is written to the setting data area 32 of the IC memory card 3. When the card reading process is selected, the vehicle operation data and the setting data are read from the IC memory card 3 in step S30d,
After performing data analysis processing in the following step S30e, the process proceeds to step S30f to perform list creation processing,
The list is displayed on the CRT 10b.

When the FD reading process is selected,
After reading data from the FD 32 in step S30g, the process proceeds to step S30f. When the end processing is selected, the work is ended after performing a predetermined work for the end in step S30h.

When the list is displayed in step S30f, the operator waits in step S30i for a selection operation using the function keys of the keyboard 10c while looking at the display of the list, and when the selection is made by operating a specific function key. The selected processing is performed accordingly. When the management table creation process is selected, in step S30j, a process for creating a management table, for example, the number of times or time exceeding the alarm speed every hour is performed, and the process returns to step S30i.

When the data decompression process is selected, the data decompression process is performed in step S30k based on the setup data read in step S30d, and the process returns to step S30i.

Further, when the printing process is selected, printing is performed in step S301, and
Return to i. When the list creation process is selected in step S30i, the process returns to step S30i after performing the list creation process in step S30m. Moreover,
When the processing menu is selected by operating the function key, the process returns to step S30a, and the above-described selecting operation can be performed again.

In the above-described embodiment, three specific conditions are set in order to determine one cycle. However, the present invention is not limited to these three conditions and can be set arbitrarily.
In particular, one cycle is determined when the vehicle is accelerated after continuously decelerating by 20 km / h or more, but this may be another vehicle speed value.

Further, in the embodiment, the setting of the acceleration / deceleration rank data is performed by the setting data written in the IC memory card, but may be stored in advance in, for example, a ROM. Furthermore, in the illustrated embodiment, the vehicle operation data collection device also collects vehicle speed and mileage data. However, only the acceleration / deceleration rank information may be collected.

[0049]

As described above, according to the present invention, in addition to each stop, detection of sudden deceleration of the maximum rank or a rank close thereto, or detection of a continuous decrease in vehicle speed from the start of deceleration, Since the maximum acceleration / deceleration rank of one cycle up to that point is incremented, regardless of the road conditions,
It is possible to collect vehicle operation data including acceleration / deceleration history information that is effective for grasping the driving situation of the driver.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic configuration of a vehicle operation data collection device according to the present invention.

FIG. 2 is a diagram showing an embodiment of a vehicle operation data collection device according to the present invention.

FIG. 3 is a diagram showing recorded contents in an IC memory card in FIG. 2;

FIG. 4 is a diagram showing details of the contents of a setting data area which is a part of FIG.

FIG. 5 is a diagram showing details of contents of an option area which is another part in FIG. 3;

FIG. 6 is a diagram showing a memory map in a RAM in FIG. 2;

FIG. 7 is a diagram showing an example of one cycle of vehicle running.

FIG. 8 is a diagram showing another example of one cycle of vehicle running.

FIG. 9 is a view showing still another example of one cycle of vehicle running.

FIG. 10 is a diagram illustrating a configuration example of an analysis device.

FIG. 11 is a flowchart showing work performed by a CPU in FIG. 2;

FIG. 12 is a flowchart showing details of a part of FIG. 11;

FIG. 13 is a flowchart showing the work of the analyzer of FIG. 10;

FIG. 14 is a diagram showing a vehicle traveling state on a highway.

FIG. 15 is a diagram showing data obtained by a conventional device in the running state of FIG.

FIG. 16 is a diagram showing a vehicle traveling state on a general road.

17 is a diagram showing data obtained by the conventional device in the running state of FIG.

[Explanation of symbols]

 2a CPU (conversion means) 2b CPU (stop detection means) 2c CPU (rapid deceleration detection means) 2d CPU (vehicle speed drop detection means) 2e CPU (maximum acceleration / deceleration rank detection means) 2f CPU (writing means) 4 IC memory card (Storage medium) 44a Acceleration rank counter (count recording area) 44b Deceleration rank counter (count recording area)

Claims (1)

(57) [Scope of request for utility model registration] 1. A vehicle operation data collection device for recording and collecting vehicle operation data having history information of acceleration and deceleration of a vehicle in a storage medium, wherein a plurality of recording areas corresponding to each of predetermined acceleration / deceleration ranks are provided. , A conversion unit for converting the acceleration / deceleration of the vehicle into one of a plurality of predetermined acceleration / deceleration rank data, a stop detection unit for detecting the stop of the vehicle, and a maximum rank or a rank close thereto. Sudden deceleration detecting means for detecting deceleration, vehicle speed decrease detecting means for detecting that the vehicle speed has continuously decreased by a predetermined value from the start of deceleration, the stop detecting means from the start of running of the vehicle or the end of the previous cycle, The cycle up to the detection by the deceleration detection means or the vehicle speed reduction detection means is one cycle, and the maximum acceleration / deceleration of the acceleration / deceleration rank data converted by the conversion means during the one cycle. A maximum acceleration / deceleration rank detecting means for detecting a speed rank; and a writing means for incrementing data of a number recording area of the recording medium corresponding to the maximum acceleration / deceleration rank detected by the maximum acceleration / deceleration rank detecting means. Characteristic vehicle operation data collection device.