JPH0816937B2 - Digital operation data recorder - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a digital operation data recording device for recording on a recording medium digital operation data indicating an operation state of a vehicle such as vehicle speed and mileage.

[Conventional technology]

2. Description of the Related Art Conventionally, this type of digital operation data recording device is used by being installed in a vehicle for compressing digital operation data indicating an operation state of the vehicle based on a predetermined set value and recording the compressed data on a recording medium. The recording medium is composed of an IC memory card or the like that is detachably attached to the recording device, and the digital operation data recorded on the recording medium is installed in an office that manages the operation of the vehicle, read by an analysis device, and expanded here. It is processed and then analyzed. More specifically, the recording device samples and inputs an electric signal having a cycle corresponding to the rotation of the axle generated by the rotation sensor connected to the transmission of the vehicle by the connecting means,
A microcomputer (CP) that calculates speed and mileage by calculation, and performs data compression processing to shorten the data length when recording the speed and mileage calculated by this calculation as digital data on a recording medium.
U).

The digital operation data recorded on the recording medium in the above-described recording device is extremely effective in managing the operation state of the vehicle, and especially after checking what speed the vehicle was traveling, it is possible to detect an abnormal speed. It is effectively used to instruct the driver about safe driving while traveling in the car, and to check the driving condition immediately before the accident when an accident occurs. Is obliged to install some kind of operation recording device.

[Problems to be Solved by the Invention]

However, as described above, if the instruction is given after the vehicle is in operation based on the digital operation data recorded in the recording medium by the recording device, it is necessary to pay attention to the driving exceeding the speed limit.
The guidance cannot be provided in a sufficiently effective manner, and the driver will continue to drive too fast after that.

Of course, the vehicle is generally provided with a speed warning device, but the warning speed is generally about 105 km / h, and there was no warning speed when traveling on a general road.

Therefore, in view of the above-mentioned conventional problems, the present invention can not only provide caution and instruction for excessive speed afterward by using the collected digital operation data, but also can provide a fine speed during driving. An object of the present invention is to provide a recording device of digital operation data which is capable of issuing an alarm and is suitable for a vehicle whose operation route is known in advance such as truck transportation.

[Means for solving the problem]

In order to solve the above problems, a digital operation data recording apparatus according to the present invention monitors the operation state of a vehicle and creates digital operation data as shown in the basic configuration diagram of FIG. In a digital operation data recording device 1 for recording digital operation data on a recording medium 2 which is detachably mounted, a predetermined operation route of a vehicle is divided from a start point to an end point into a plurality of sections, and a distance of each section is divided into Speed / distance data storage means 2a _{221 to} 2a _22n for storing data indicating a warning speed, and the speed / distance data storage means 2a
_{221 to} 2a distance detection means 12c ₁ for detecting that the vehicle has traveled the distance of each section indicated by the distance data stored in _22n , and the distance traveled by the vehicle by the distance detection means 12c ₁ When it is detected, the reading means 12c ₂ for reading the warning speed data of the next section from the speed / distance data storage means 2a _{221 to} 2a _22n, and the reading means 12
a speed detection means 12c ₃ for detecting that the vehicle is traveling at a speed exceeding the speed indicated by the warning speed data read by c _2, the speed indicated by the warning speed data by the speed detecting means 12c ₃ An alarm means 12i is provided for generating an alarm sound when it is detected that the vehicle is traveling at a speed exceeding the limit.

In order to solve the above-mentioned problems, the digital operation data recording device according to the present invention also has the speed / distance data storage means 2a _{221-222 as} shown in the basic configuration diagram of FIG.
a _22n is formed by a part of the recording area of the recording medium 2, and the recording of the warning speed data and the distance data in the recording area is performed when the recording medium 2 is initialized.

[Action]

In the configuration of FIG. 1 described above, the starting point and the ending point of a predetermined vehicle operation route are divided into a plurality of sections, and the data indicating the distance and the warning speed of each section are stored in the speed / distance data storage means 2a _{221 to} 2a. _The distance detection means 12c ₁ detects that the vehicle has traveled the distance of each section indicated by the distance data stored in the speed / distance data storage means 2a _{221 to} 2a _22n. Means 12
When the vehicle it is detected that the vehicle has traveled the distance of each section by c _1, the said speed and distance data storing means 2a ₂₂₁ to 2a reading means warning velocity data of the next segment from _22n 12c ₂
Issued but reading, when it has detected that the speed detecting means 12c ₃ a that the vehicle is traveling at a speed exceeding the speed indicated by the warning speed data read by the reading unit 12c _2, the alarm means 12i alarm sound The driver can be given a detailed speed warning.

Further, the speed / distance data storage means 2a _{221 to} 2a _22n
Is formed by a part of the recording area of the recording medium 2 in which the digital operation data indicating the operation state of the vehicle is recorded, and the warning speed data and the distance data are recorded in this recording area when the recording medium 2 is initialized. I am doing so
It is not necessary to provide the recording device with a unit for recording these data, and the structure does not become complicated.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows an embodiment of a recording / analysis system in which the digital operation data recording device according to the present invention is combined with an analyzing device. In the figure, the recording analysis system for digital operation data includes a recording device 1 and a recording medium as a recording medium.
It is composed of an IC memory card 2 and an analysis device 3.

The recording device 1 is mounted on a vehicle, creates digital operation data indicating a traveling speed and a traveled distance of the vehicle, which change from time to time, and compresses the created digital operation data based on a predetermined set value to record the recording medium 2 To record. The analysis device 3 is installed in an office that manages the operation of the vehicle, reads the digital operation data compressed and recorded in the recording medium 2, expands the read digital operation data, analyzes the data, and displays the analysis result. Display on the screen of the display device,
It is used for initializing the IC memory card 2 as well as for printing on a printing paper by a printer and outputting.

Generally, in order to perform the recording analysis as described above, the specification of the speed compression tolerance (allowable error range) and sampling time used on the recording side, the recording location of the recording medium (whether or not to record options, etc.) are specified. Must be set as. For example, the accuracy of the digital speed data obtained by the compression process depends on the speed compression tolerance and the sampling time as the predetermined set values. Therefore, when the accuracy of the digital speed data desired by the user is different, I am trying to change the setting value.

By the way, since the set value is also used when the analyzing device 3 reads the digital operation data recorded in the recording medium 2 and expands the same, the recording medium 2 includes the compressed digital operation data and the above-mentioned set value. Predetermined set values are also recorded.

In FIG. 2, the recording apparatus 1 samples a rotation sensor 11 connected to a transmission of a vehicle by connecting means (not shown) and an electric signal from the rotation sensor 11 and inputs the same to obtain a speed and a traveling distance by calculation. When recording the speed and mileage obtained by this calculation as basic digital operation data in the IC memory card 2 as a recording medium, the device main body 12 performs a work such as compression processing of the data. Twelve
A card insertion hole 12a for inserting / removing the IC memory card 2 is provided, and by mounting the IC memory card 2 in the card insertion hole 12a, various data of the card recorded in the IC memory card 2 is recorded. Is read or the compressed digital operation data is written in the IC memory card 2.

On the other hand, as shown in FIG.
A personal computer (PC) 31 including an RT 31b, a keyboard 31c, a floppy disk (FD) driver 31d, a printer 31e, etc., and a reader / writer (RW) 32 connected to the main body 31a of the PC 31. FD33 and 34 are detachably mounted, and RW32 is IC memory card 2 detachably mounted.

As shown in FIG. 3, the IC memory card 2 has a built-in memory 2a in which one word has 8 bits (1 byte), and is commonly used by one IC memory card 2 in the memory 2a. Common data recording area 2a ₁ for recording data, speed warning data recording area 2a ₂ for recording data related to warning speed, and digital operation data recording for recording basic digital operation data such as speed and mileage region
2a ₃ are provided.

A part of the data in the common data recording area 2a ₁ and the speed warning data recording area 2a ₂ is recorded when the IC memory card 2 is initialized by the analysis device 1 described later. The speed warning data recording area 2a ₂ is initialized to 1
6 binary counter region 2a ₂₁ of 1 byte configuration "00" is cleared is recorded, the initialization time of the warning speed data V and the warning section distance data L and are the n recorded in pairs It is composed of speed / distance data recording areas 2a _{221 to} 2a _22n .

Now, the operation route between the operation start point and the operation end point of the truck vehicle is known in advance, and as shown in FIG. 4, the section between the start point and the relay point A is a general road, and the distance is 5 km.
The section between relay points A and B is a highway and the distance is 50K.
m, the section between relay points B and C is a general road, and its distance is 3
Km, and when the section between the relay point C and the end point is a general road and the distance is 10 Km, when setting the warning speeds of the general road and the highway to 60 Km / h and 105 Km / h, respectively, As warning speed data V and distance data L, as shown in FIG. 3, 60 Km / h and 5 Km, 105 Km / h and 50 Km, 60 Km
/ h and 13 Km pair is the speed warning data recording area 2a ₂
Are recorded in the speed / distance data recording areas 2a _{221 to} 2a ₂₂₃ , respectively. Although not shown in FIG. 3, return path data is recorded in the same manner.

Note that the above-mentioned speed tolerance indicates an error range allowed at the time of recording, and is related to the accuracy of the speed data collected together with the speed sampling time, and the accuracy of the data obtained by the compression process depends on these. Data will be essential for decompression and analysis on the analysis side.

Further, at least one of the distance data and the speed data of each operation, the operation start time and the operation end time of each operation are recorded at the beginning and at the end, respectively. It is important for allocating during this time and knowing the speed and mileage at each time.

Further, one operation is defined as a period from when the IC memory card 2 is attached to the recording device 1 to when it is removed.

On the other hand, in the FD33 installed in the FD driver 31d, a data analysis program or the like is stored in advance.
By mounting the FD 33 on the FD driver 31d, the data analysis program and the like are read and stored in the internal memory in the apparatus main body 31a.

When the IC memory card 2 is attached to the RW32 and the reading operation is performed, all the data recorded in the common data recording area 2a ₁ and the digital operation data recording area 2a ₃ of the memory 2a of the IC memory card 2 are read. It is transferred to the main body 31a of the PC 31 and temporarily stored in the internal memory in the apparatus main body 31a. The data stored in the internal memory in the apparatus main body 31a is subjected to decompression processing or analysis processing according to the analysis program, or recorded in the data collection FD 34 mounted in the FD driver 31d.

When the FD34, which has already recorded the digital operation data, is installed in the FD driver 31d, the digital operation data to be analyzed stored in the FD34 is read into the internal memory in the device main body 31a and the extension analysis is performed by the analysis program of the FD33. It can be processed.

As shown in FIG. 5, the device main body 12 of the recording device 1 includes a pulse counter 12b, a CPU 12c, an internal memory 12d including a ROM and a RAM, a battery 12e, a display 12f, an input / output interface 12g, and a real-time date indicating real time. It is composed of a clock 12h for generating date / time / minute / second data and an alarm sound generator 12i, and the input / output interface 12g is composed of a connector to which the IC memory card 2 is detachably connected.

When a vehicle equipped with the device body 12 configured in this way travels, the rotation sensor 11 generates a pulse signal and supplies the signal to a pulse counter 12b in the device body 12. The pulse counter 12b is a device that counts the number of input pulses, and is configured to re-count from zero when the count value reaches the upper limit. The CPU 12c is a control device that controls all the functions of the device main body 12 and is controlled by a control program stored in the ROM in the internal memory 12d. The CPU 12c monitors the setting values of the speed sampling time and the speed tolerance stored in the RAM of the internal memory 12d, determines the cycle of the sampling timing signal based on the setting value of the speed sampling time, and determines the speed tolerance. The allowable range for speed compression is determined based on the set value. The RAM of the internal memory 12d also stores the maker code of the recording device 1, the office code to which the vehicle in which the recording device 1 is mounted, and the vehicle code are stored together. It is read at the start of operation and recorded in the IC memory card 2 as ID data of each operation.

The CPU 12c reads the value of the pulse counter 12b in accordance with the sampling timing signal, calculates the speed by calculating the number of input pulses during the sampling period by the difference from the previous value stored in the RAM in the internal memory 12d, and It is determined that the vehicle has traveled a predetermined distance with a predetermined number of pulses, and these speeds and travel distances are used as digital operation data in the IC.
Compress and record in the memory card 2. When recording the above digital operation data, if this data is the first data at the start of operation, the CPU 12c outputs the time data generated by the clock 12h at that time through the input / output interface 12g and records it on the recording medium 2. Let

The CPU12c reads the data recorded in the speed warning data recording area 2a _2, and the read data, based on the travel distance traveled speed and integration computed, of the section matter what warning period current It is determined whether or not the warning speed is exceeded, and when the warning speed is exceeded, the alarm sound generator 12i is turned on to generate an alarm sound to warn that the warning speed is exceeded.

By the way, the speed compression process is performed based on the following concept. That is, when an allowable error range (tolerance) for each sampling speed value is set in advance and a straight line that crosses the allowable difference is considered, the straight line represents vehicle speed information within the allowable difference. If the length of the straight line is represented by the number of samples and recorded and the value of the end point of the straight line is also recorded, the vehicle speed during the period covered by the straight line can be regularly managed. In this way, if the vehicle speed is stored only by the length of the straight line and the final data, a large amount of information can be stored with a small amount of data and data compression can be realized.

FIG. 6 shows the vehicle speed V ₀ at the time of sampling from t ₀ to t ₁₁ .
~ V ₁₁ shows the relationship, the dotted line is the vehicle speed error range. At each sampling time, it is checked whether or not there is a straight line that crosses the error range of the data before that time. t ₀ ~ t ₉
The line exists up to, but it does not exist at t ₁₀ . At this time, of the straight lines that include the starting point V ₀ and cross the error range, a straight line L ₂ that passes the upper limit and a straight line L ₁ that passes the lower limit are drawn, and the straight lines L ₁ and L ₂ of the tolerance of the final sampling data V ₉ are drawn.
The midpoint V in the range sandwiched by is the end point data, and the length is "9". The end point becomes the start point of the next straight line, and so on, and so on. The compression speed data recorded in the IC memory card 2 by the above compression processing is recorded in the number of samples and the speed.

Digital velocity data was recorded by the recording device 1.
The IC memory card 2 is taken out from the card insertion hole 12a and inserted into the RW32 of the analysis device 3 in order to analyze the digital speed data therein.

On the other hand, in the analysis device 3, when the FD33 is attached to the FD driver 31d and the execution of the analysis program stored therein starts, first, various data in the FD33 are read and stored in the internal memory. , Display the menu on CRT31b. This menu includes card initialization processing, termination processing, FD reading processing, and card reading processing. When the card initialization processing is selected, the common data recording area 2a _{1 of the} IC memory card 2 mounted on the RW32 is selected. And write predetermined data in the speed warning data recording area 2a ₂ . Initialized I
The C memory card 2 is attached to the in-vehicle recording device 1 at the time of the next operation of the vehicle, and accordingly, the recording device 1 first stores the data in the common data recording area 2a ₁ and the speed warning data recording area 2a _{2 in} the IC memory card. The data is read from No. 2 and stored in a predetermined area of the internal memory 12d, and thereafter, this data is used to perform recording processing and speed alarm processing.

The general operations of the recording device 1 and the analyzing device 3 have been described above. The details will be described below with reference to the flowcharts of FIGS. 7 to 9, respectively.

FIG. 7 is a flowchart showing the work executed by the CPU 12c of the recording apparatus 1 in accordance with the control program. The CPU 12c starts its operation when its power is turned on, initializes it in the first step S1, and sets the initial flag to "0". That is, clear. Next, in step S2, it is determined whether the IC memory card 2 is recordable. In this determination, it is determined whether the ignition (IGN) switch of the vehicle is on, or whether the IC memory card is mounted in a recordable state. When the determination in step S2 is YES, the process proceeds to step S3, in which it is determined whether the initial flag is "1", that is, whether it is set, and when the determination is NO, the process proceeds to step S4.

Reads data of the common data recording area 2a ₁ and the speed warning data recording area 2a ₂ of the counter area 2a ₂₁ of the IC memory card 2 proceeds to the initial flag from the That set "1" in step S5 in the step S4. Then step
In step S6, the speed (v) is calculated by the calculation based on the count value read from the pulse counter 12b, and in the subsequent step S7, the speed (v) data and the travel distance data calculated in step S6 are compressed to perform IC processing. The digital operation data recording area 2a ₃ of the memory card 2 is written and recorded. Then the process proceeds to step S8, where returns from performing speed alarm process by the data values and the IC memory card 2 of the speed warning data recording area of the counter area 2a ₂₁ read in step S5 to step S2.

If the initial flag is set to "1", that is, set in step S4 as described above, the determination in step S3 is YE.
S becomes, and after execution of step S3, step S4 and step S
Skip 5 and proceed to step S6.

Further, when the determination in step S2 is NO,
That is, when the IC memory card 2 is not in the recordable state, the process proceeds to step S9 and it is determined whether or not the initial flag is "1", that is, is set. When the determination in step S9 is NO, the process returns to step S2, and the determination is YES.
In step S10, the process proceeds to step S10. In step S10, after ending processing is performed, the process proceeds to step S11 to clear the initial flag to "0", that is, to return to step S2.

The speed warning process of step S8 is executed by the subroutine of FIG. That is, in the subroutine of the speed alarm processing, when the value of the counter area 2a ₂₁ read in step S5 in the first step S8a, it is determined whether or not "0", the determination is YES, i.e. the vehicle is starting If the vehicle is traveling in the section immediately after, it proceeds to step S8b, where the data of the accumulated distance counter area formed by using the predetermined area of the RAM (read / write memory) in the internal memory 12d is cleared Step
Continue to S8c. The accumulated distance counter area is for storing traveling distance data obtained by accumulating the traveling distance of a designated vehicle. Further, when the determination in step S8a is NO, that is, when the vehicle is traveling in a section other than the first section, step S8b is skipped and the process proceeds to step S8c.

In step S8c, read warning speed data V and the distance data L of the speed and distance data recording area 2a ₂₂₁ to 2a _22n corresponding to the value of the speed warning data recording area 2a ₂ of the counter area 2a _21. For example, when the value of the counter area 2a ₂₁ is "00", the speed / distance data recording area 2a
₂₂₁ warning speed data V ₀ (60Km / h) and distance data L ₀ (5K
m) when the value in the counter area 2a ₂₁ is “01”, the warning speed data V in the speed / distance data recording area 2a ₂₂₂
Read ₁ (105Km / h) and distance data L ₁ (50Km) respectively.

After that, the process proceeds to step S8d, where the traveling distance of the vehicle is obtained, the obtained traveling distance is added to the value of the integrated distance counter area configured in the RAM of the internal memory 12d, and the value is stored instead of the previous value. To do. Therefore, the value (l) obtained by integrating the traveling distances of the respective sections is stored in the integrated distance counter area.

Next, in step S8e, whether the value (l) accumulated in step S8d is larger than the distance data L read from the IC memory card 2 in step S8c, that is, the section specified by the distance data L is exceeded. It is determined whether or not. When the determination in step S8e is NO, it is determined that the vehicle is still in that section and the process proceeds to step S8f. Here, the warning speed data V of the section read in step S8c is compared with the speed v calculated in step S7. , It is determined whether or not the speed v is higher than V, that is, whether or not the traveling speed v of the vehicle at present exceeds the warning speed V set in advance for the section where the vehicle is currently traveling. If the determination in step S8f is YES, step S8
Proceed to step g to activate the alarm sound generator 12i to generate an alarm sound, and if the determination in step S8f is NO, step S
The process proceeds to 8h, where the operation of the alarm sound generator 12i is stopped to stop the generation of the alarm sound, and then the process returns to step S2 in the flowchart of FIG.

When the determination in step S8e is YES, that is, when the travel of the section designated by the distance data L is exceeded, the process proceeds to step S8i, where the IC memory card 2
The value of the speed warning data recording area 2a ₂ of the counter area 2a ₂₁ +1 i.e. increments of, then step S8
After proceeding to j and clearing the value of the integrated distance counter area formed in the RAM of the internal memory 12d, the process returns to the step S2 in the flowchart of FIG.

As described above, since new warning speed data is set every time the vehicle travels over each section, it is possible to issue a warning at a different warning speed for each section.

On the other hand, FIG. 9 is a flowchart showing the work executed by the PC 31 of the analysis device 3, and the device main body 31a of the PC 31 is MS-DOS.
The operation is started by the activation, the command input is waited in the first step S31a, and when the command is input, it is determined in the following step S31b whether or not the analysis program is called. If the determination is NO, proceed to another step to perform the work according to the command, and if the determination in step S31a is YES, proceed to step S31 to perform time processing,
In the subsequent step S32, the processing menu is displayed on the CRT 31b. PC31 that the operator performs by seeing this menu display
The selection operation by the ten keys or the function keys of the keyboard 31c is waited in step S33, and when selected by the operation of the specific ten keys or the function keys, the selected process is performed according to the selection operation.

When the card initialization process is selected, step S3
4, the common data recording area 2a ₁ and the speed warning data recording area 2a _{2 of the} IC memory card 2 mounted on the RW32
Write the specified data to. That is, writes the "00" to the speed warning data recording area 2a ₂ of the counter area 2a _21, the speed and distance data recording area 2a ₂₂₁ to 2a _22n written warning velocity data and the distance data of each section in turn. The warning speed data and distance data for each of the above sections are available on the keyboard 31
It is entered by pressing the c key.

When the card reading process is selected, the common data, the ID data and the digital speed data are read from the IC memory card 2 in step S35, the data saving process is performed in the following step S36, and the process proceeds to step S37 The creation process is performed, and the list is displayed on the CRT in step S38.
Display on 31b. Also, when the FD reading process is selected,
After reading the data from the FDs 33 and 34 in step S39, the process proceeds to step S37. When the end process is selected, the work is ended after performing a predetermined work for the end in step S40.

When the list is displayed in step S38, the operator operates the keyboard of PC31 by looking at the list.
Select operation using the 31c function key in step S41
When the selected function key is selected by operating the function key, the selected process is performed accordingly.

Now, when the management table creation process is selected, step S42 is executed to create a management table in a predetermined format, and this is displayed on the screen of the CRT 31b as the display means in step S43.

When the data decompression process is selected, step S44
In step S35, data decompression processing is performed based on the data read in step S35, and the speed that changes momentarily according to the resulting data for, for example, 24 hours (1 day)
In order to display the graph on one screen of the CRT 31b, a graph conversion process is performed in step S45, the graph of the result of this process is displayed on the CRT 31b in step S46, and then the process returns to step S41.

Further, when the printing process is selected, the content displayed on the CRT 31b, for example, is printed on the print paper in step S47, and then the process returns to step S41. Also step S41
In step S4, when list creation processing is selected, step S4
In step S49, the list creation process is performed, the created list is displayed on the CRT 31b in step S49, and then step S41 is performed.
Return to Moreover, when the processing menu is selected by operating the function key, the process returns to step S32 and the above-described selection operation can be performed again.

In addition, in the example shown in FIG. 3 and FIG. 4, the warning speed is set only to 60 km / h for the general road and 105 km / h for the expressway, but the general road is relatively open in the suburbs. We divide into roads that are relatively crowded in urban areas and
It goes without saying that different warning speeds may be set respectively.

In the illustrated embodiment, the warning speed data and the distance data are sent to the IC memory card 2 every time the speed and distance are compared.
However, it may be read once at the start of operation and stored in the internal memory 12d.

〔effect〕

As described above, according to the present invention, the starting point and the ending point of a predetermined vehicle operation route are divided into a plurality of sections, and data indicating the distance and the warning speed of each section is stored and stored. When it is detected that the vehicle has traveled the distance of each section indicated by the distance data, and when it is detected that the vehicle has traveled the distance of each section, the warning speed data of the next section is read out and read out. When it is detected that the vehicle is traveling at a speed exceeding the speed indicated by the warning speed data, an alarm sound is emitted to give the driver a detailed speed warning. Not only will you be able to use it to give caution and guidance when the speed is too high, but you will also be able to give detailed speed warnings while driving, especially if you are not transporting by truck. Recording apparatus for digital operation data running route is suitable for vehicles that are known in advance as is obtained.

In addition, the warning speed data and the distance data are recorded at the same time when the recording medium is initialized by using a part of the recording medium in which the digital operation data created by monitoring the operation state of the vehicle is recorded. Can be dealt with without providing a means for recording.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of a digital operation data recording device according to the present invention, and FIG. 2 is a diagram showing an embodiment of a digital operation data recording device according to the present invention which constitutes a recording analysis system. FIG. 4 is a diagram showing the contents of recording in the recording area of the IC memory card, FIG. 4 is an explanatory diagram for explaining how to create speed warning data, and FIG. 5 is the device of the digital operation data recording device in FIG. FIG. 6 is a block diagram showing a configuration example of the main body, FIG. 6 is a diagram for explaining an example of a method of compressing digital operation data, and FIGS. 7 to 9 are flowcharts showing work performed by the CPU in FIG. is there. 1 ... Recording device, 12c ₁ ... CPU (distance detection means), 12c ₂
...... CPU (reading means), 12c ₃ ...... CPU (speed detecting means),
12i ... Alarm sound generator (alarm means), 2 ... IC memory card (recording medium), 2a _{221 to} 2a _22n ... speed / distance data recording area (speed / distance data storage means).

Claims (2)

[Claims] 1. A digital operation data recording device for monitoring operation status of a vehicle to create digital operation data, and recording the created digital operation data on a recording medium which is detachably mounted, is predetermined. A speed / distance data storage means for dividing the start point to the end point of a vehicle operation route into a plurality of sections and storing data indicating the distance and warning speed of each section, and the distance stored in the speed / distance data storage means Distance detection means for detecting that the vehicle has traveled the distance of each section indicated by the data, and the speed / distance data storage means when the distance detection means detects that the vehicle has traveled the distance of each section. Read means for reading the warning speed data of the next section from the vehicle, and a vehicle at a speed exceeding the speed indicated by the warning speed data read by the reading means. Speed detection means for detecting that both are traveling, and an alarm for generating an alarm sound when the speed detection means detects that the vehicle is traveling at a speed exceeding the speed indicated by the warning speed data. And a means for recording digital operation data. 2. The speed / distance data storage means is formed by a part of a recording area of the recording medium, and the recording of the warning speed data and the distance data in the recording area is performed when the recording medium is initialized. The digital operation data recording device according to claim 1, wherein