JPH06174498A - Digital vehicle operation data recording device - Google Patents

Abstract

PURPOSE:To provide a recording device capable of obtaining the record about the over-speed without impairing the safety operation of a driver. CONSTITUTION:A warning means 37 generates an alarm while the vehicle speed exceeds the over-speed. A detecting means 312 detects that the period when the vehicle speed exceeds the over-speed becomes the preset over-time or above. A writing means 311 writes the information indicating that the vehicle speed exceeds the over-speed into a memory means 4 in response to the detection by the detecting means 312. An occurrence number writing means 3111 writes the occurrence number that the vehicle speed exceeds the over-speed into the memory means 4 in response to the detection by the detecting means 312, and an occurrence time writing means 3112 writes the time when the vehicle speed exceeds the over-speed into the memory means 4 via the time data from a clock means 34 respectively. A switching means 35 selects one of the values for the general road and the values for the express highway set for the over- speed and the over-time in advance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital vehicle operation data recording device, and more particularly, to information indicating the speed of a vehicle mounted on a vehicle, which changes moment by moment, and a vehicle speed exceeding a predetermined speed. The present invention relates to a digital vehicle operation data recording device for recording the information shown.

[0002]

2. Description of the Related Art A device of this type is mounted on a vehicle, monitors the speed and the mileage that change from moment to moment, converts the signals obtained by this monitoring into digital data, and stores this in a recording medium such as an IC memory card. To record. And
The digital data in the recording medium recorded by this device collects vehicle operation information necessary for vehicle management.
It is read and analyzed by an analysis device arranged in a management office that manages the vehicle.

FIG. 8 shows a vehicle operation information collecting / analyzing system which a digital vehicle operation data recording apparatus and an analyzing apparatus constitute. In FIG. 8, reference numeral 1 is a transmission 2 of the vehicle and inputs rotations corresponding to the number of rotations of an axle. A rotation sensor for converting this rotation into a pulse signal having a frequency proportional to the number of rotations, a pulse signal from the rotation sensor 1 is sampled and input, and an instantaneous speed and a traveling distance are calculated and a predetermined data compression process is performed. It is a vehicle-mounted digital vehicle operation data recording device for performing and recording. An IC memory card 4, which is a portable recording medium, can be removably attached to the device 3. By mounting the IC memory card 4 on the device 3, the speed, distance and the like are recorded in the form of digital data.

Further, in FIG. 1, reference numeral 5 is an analysis device installed in an office or the like that manages the operation of vehicles. By mounting the IC memory card 4 removed from the device 3 on this analysis device 5, , Digital data is read from the IC memory card 4 and saved in a recording medium such as a floppy disk, and vehicle operation data obtained by analyzing the saved digital data is collected, printed or displayed, and digital data is displayed. In order to record, the initialization of the IC memory card 4 used by being attached to the device and the recording of setting data and the like are performed.

In the above-mentioned device, the instantaneous speed is obtained by calculation based on the pulse signal from the rotation sensor 1 provided in the vehicle in order to collect the speed data of the vehicle, and the instantaneous speed is sampled at a cycle of 0.5 seconds, for example. The speed data thus obtained is compressed and recorded on a recording medium to be collected. Further, it is determined whether or not the speed of the speed data obtained by sampling as described above exceeds a predetermined set speed. When it is determined that the speed exceeds the set speed and the speed is exceeded, the number of times is counted,
As shown in the figure, a record consisting of the set speed and the number of overruns was obtained.

The data composed of the set speed and the number of overtime collected as described above is used by a manager who manages and guides the safe driving of the driver.

[0007]

However, in the above-mentioned conventional apparatus, it is judged whether or not the speed exceeds the set speed for each sampling in a cycle of 0.5 seconds, and if the speed exceeds the set speed, the number of times is exceeded. It is supposed to be counted up. For this reason, the driver must keep an eye on the speedometer during driving, pay attention to the meter more than the front, and lack attention to the front in order to prevent such overtime counting. On the contrary, there was a risk of danger.

Therefore, in view of the above-mentioned conventional problems, the present invention provides a digital vehicle operation data recording device capable of obtaining a record of overspeed without impairing safe driving of a driver. Is intended.

[0009]

A digital vehicle operation data recording apparatus according to the present invention for achieving the above object is mounted on a vehicle and changes every moment as shown in the basic configuration diagram of FIG. A digital vehicle operation data record provided with a writing means 31 ₁ for measuring the vehicle speed at constant time intervals and converting it into digital data, and writing this in the storage means 4 together with information indicating that the vehicle speed has exceeded a predetermined overspeed. In the device, an alarm means 37 for issuing an alarm while the vehicle speed exceeds the excess speed, and a detection means 31 for detecting that the period during which the vehicle speed exceeds the excess speed is equal to or longer than a predetermined excess time. ₂ and the writing means 31 ₁
However, in accordance with the detection by the detecting means 31 _2, information indicating that the vehicle speed exceeds the excess speed is written in the storage means 4.

The writing means 31 ₁ is the detecting means 31.
It is characterized in that it has a number-of-times writing means 31 ₁₁ for writing the number of times that the vehicle speed has exceeded the overspeed in the storage means 4 in accordance with the detection by ₂ .

One of the overspeed or the overtime,
Alternatively, it is characterized in that the switching means 35 is provided for selecting one of the preset values for the general road and the expressway for both of them.

A clock that generates time data indicating the current time
The writing means 31 is provided with a means 34. ₁Is the detection means
31₂The time from the clock means 34 according to the detection by
According to the data, the time when the vehicle speed exceeds the above-mentioned excess speed is described above.
Occurrence time writing means 31 for writing in the storage means 4₁₂Having
It is characterized by.

[0013]

In the above structure, when the vehicle speed exceeds the overspeed, the alarm means 37 issues an alarm, and the detecting means 31 ₂ detects that the period during which the vehicle speed exceeds the overspeed is equal to or longer than the predetermined overtime. Since the writing means 31 ₁ writes the information indicating that the overspeed has been exceeded into the storage means 4, recording is performed only when the vehicle ignores the alarm and travels over the overspeed, and the speed is exceeded for a short time. Recording is not done just by exceeding the speed.

[0014] Since writing the number of times writing means 31 ₁₁ of the writing means 31 ₁ exceeds the overspeed according to the detection by the detection means 31 ₂ in the memory means 4, travels many times the line ignoring alarm by this number You can know if you were broken.

Since the switching means 35 can select one of the preset values for the general road and the expressway for the overspeed or the excess time, the warning and the recording on the general road and the expressway are appropriately performed. be able to.

Generation time writing means 31 _{12 of} writing means 31 ₁
However, according to the detection by the detection means 31 _2, the time when the overspeed is exceeded is written in the storage means 4 based on the time data from the clock means 34, so that the time zone during which the alarm is disregarded by this time is performed. You can know

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows an embodiment of a digital operation data recording apparatus according to the present invention, in which the apparatus has a microcomputer (CPU) 31 which operates according to a predetermined control program. The CPU 31 includes a program ROM 31a storing a control program, a data ROM 31b storing various setting data, and a RAM 31c having various work areas used for signal processing.

As shown in FIG. 3, the data ROM 31b includes a general overspeed applied when traveling on a general road, a general overtime determined to exceed the general overspeed, and a high speed overspeed applied when traveling on a highway. Area 3 that stores the high-speed excess time and the high-speed excess time that is determined
1b _{1 to} 31b ₄ are provided, and the data ROM 31b
The data of each area is fixedly written in advance. However, when the data stored in each area can be rewritten at any time and the data can be held without backing up, the data ROM 31b is replaced by E
A non-volatile rewritable external memory such as a P ² ROM may be connected to the CPU 31.

On the other hand, in the work area of the RAM 31c, as shown in FIG. 4, in addition to an excess time timer for measuring the excess time continuously exceeding the excess speed, IDO
Area 31c for setting flags such as KF and OF
_{1 to} 31c ₃ are provided.

The CPU 31 has an interface (I /
F) The pulse signal from the rotation sensor 1 and the signal indicating the accessory (ACC) state of the ignition (IGN) switch are input via the circuit 32, and the IC memory card 4 can be inserted and removed via a connector not shown. It is designed to be connected to.

The CPU 31 also includes the IC memory card 4
In order to determine that writing to the IC memory card 4 is possible, a lid open detection switch 33 that detects the open state of the lid provided in the opening for inserting and removing the IC memory card 4, and the current time by measuring the actual time is displayed. A clock 34 for generating the indicated data, a general / high speed changeover switch 35 for switching between a general road and a highway, and a display 36 for displaying the current time and the like.
And a buzzer 3 which is sounded when the vehicle speed exceeds the overspeed, that is, when the vehicle speed becomes overspeed.
7 and 7 are connected.

By mounting the IC memory card 4 in which the card ID for identifying the card is written in advance in the apparatus having the above-mentioned configuration, the card is mounted on the IC memory card 4 and the lid is opened. Write the operation ID for identifying each operation, which is defined as the period from closing to opening the lid, as well as compressed speed data during each operation and information indicating that the vehicle speed has exceeded the overspeed. .

For this purpose, the CPU 31 inputs and processes the signal generated by the rotation sensor 1 in accordance with the running of the vehicle, and measures the vehicle speed every 0.5 seconds. Then, it is judged whether or not the vehicle speed measured every 0.5 seconds exceeds the overspeed, and the buzzer 37 is sounded when the vehicle speed exceeds the overspeed. Also, if the period during which the vehicle speed exceeds the overspeed is equal to or longer than the overtime, it is determined that the vehicle is overspeed and the time of occurrence is set to the clock 3
The time data from 4 is written in the IC memory card 4, and the over time area in the IC memory card 4 provided corresponding to this occurrence time is incremented while the speed is over to record the over time. Further, when the speed over is judged, the over time area and the over time accumulated area in the IC memory card 4 are incremented to record the over speed frequency and the over time accumulated time, respectively.

FIG. 5 shows a format for writing data to the IC memory card 4. In FIG. 5, the writing area of the IC memory card 4 is a card ID writing area 41.
, Operation ID areas 42 _{1 to} 42 n, speed compressed data areas 43 _{1 to} 43 n, and option area 44. The option area 44 is the data ROM 3
Preset general overspeed, general overtime in 1b,
A set data area 44a to which a high speed excess speed and a high speed excess time are posted, an over frequency area 44b, an accumulated over time area 44c, and an over time and an over time are recorded as one set each time a speed over occurs. General recording area 44d and high-speed recording area 44
It consists of e.

The operation for the vehicle-mounted device 3 to write data in the format shown in FIG. 5 will be described below with reference to the flowchart of FIG. 6 showing the work performed by the CPU 31. C
The PU 31 starts its operation when the 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 work areas in the RAM used for various processes are cleared.

Thereafter, the process proceeds to step S2 and the I / F circuit 3
ACC of IGN switch by the signal input via 2
Is on or off. When the determination in step S2 is YES, the process proceeds to step S3, where the IC
Depending on the state of the lid opening detection switch 33 that detects the opening of the lid provided in the opening for inserting / removing the memory card 4, IC
It is determined whether writing to the memory card 4 is possible.

If the determination in step S3 is YES, the process proceeds to step S4 to determine whether the IDOKF (flag) is 1, and if the determination in step S4 is NO, the process proceeds to step S5 to set IDOKF to 1. Then, the process proceeds to step S6, where a card start process involving reading and writing to the card is performed in connection with the mounting of the IC memory card 4, and then the process proceeds to step S7. When the determination in step S4 is YES, that is, when IDOKF is 1, 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 34 that keeps the time of year, month, day, hour, minute, and second connected to, the process proceeds to step S8. Step S
In 8, it is determined whether or not 0.5 seconds has elapsed. If the determination is YES, the process proceeds to step S9, the vehicle speed is calculated based on the distance pulse input from the rotation sensor 1, and the next step S10 is performed. In step S11, compression processing is performed on the calculated vehicle speed, and then the process proceeds to step S11. In step S11, an overspeed process is performed by executing a subroutine described later with reference to the flowchart of FIG. 7, and after this process, the process proceeds to step S12.

When the determination in step S8 is NO, that is, when 0.5 seconds has not elapsed, steps S9 to S11 are skipped and the process proceeds to step S12. In step S12, the distance is counted, and then the process proceeds to step S13 to display the clock on the display 36, and then the process returns to step S2.

If the determination in step S2 is NO, that is, if the ACC of the IGN switch is in the off state, the process proceeds to step S14 to put the CPU 31 in the sleep state and then to step S15, where the same clock processing as in step S7 is performed. I do. In the next step S16, the same judgment as in the above step S2 is made. If the judgment in step S16 is NO, the process returns to step S14. IG
The ACC of the N switch is turned on and the step S16 is performed.
Steps S14 to S16 are repeated until the determination in step S16 is YES, and when the determination in step S16 is YES, the process returns to step S2.

When the determination in step S3 is NO, that is, when the lid detection switch 33 for detecting the opening of the lid for inserting and removing the IC memory card 4 is written in the IC memory card 4 depending on the state. If it is determined that the IDO is impossible, the process proceeds to step S17 and the IDO
It is determined whether KF is 1. This step S17
If the determination is YES, then in step S18 the ID
OKF is set to 0, the card end process is performed in the next step S19, and then the process returns to step S2.
When the determination in step S17 is NO, step S18 is skipped and step S19 is returned to step S2.

More specifically, the overspeed process in step S11 is performed by executing the flowchart shown in FIG. In overspeed processing, the first step S
At 11a, it is determined whether the vehicle speed calculated at step S9 is overspeed. In this determination, it is determined whether the general overspeed or the high speed overspeed stored in the data ROM 31b is used according to the state of the general / high speed changeover switch 35, and it is determined whether the vehicle speed exceeds the overspeed. .

When the determination in step S11a is YES, that is, when the vehicle speed exceeds the overspeed, the process proceeds to step S11b, the buzzer 37 is sounded, and the alarm is turned on. After that, the process proceeds to step S11c and RAM3
After the excess time timer 31c ₁ in 1c is started, the process proceeds to step S11d, where the excess time timer 31c 1
Judge whether the time of ₁ is over time.
In this determination, as in the case of step S11a, whether the general overtime or the high speed overtime stored in the data ROM 31b is used is determined by the state of the general / high speed changeover switch 35, and the overtime timer 31c is used. Judge whether the time of ₁ has exceeded its overtime.

If the determination in step S11d is NO, that is, if the predetermined excess time has not elapsed since the speed exceeded, the process returns to the main routine of FIG.
Until the determination of step S11a becomes NO or the determination of step S11d becomes YES, steps S11a to
S11d is repeatedly executed and the buzzer 37 continues to ring. Therefore, when the driver notices that the buzzer 37 sounds overspeed and brakes in the course of the above repeated execution until the excess time elapses, the vehicle speed is reduced and the determination in step S11a becomes NO.

When the determination in step S11a is NO, the process proceeds to step S11e, where the ringing of the buzzer 37 is stopped and the aarm is turned off. Step S11
After execution of e, the process proceeds to step S11f and OF (flag)
Is set to 0 and the process proceeds to step S11g, where the excess time timer 31c ₁ is cleared and then the process returns to the main routine.

Even when the buzzer 37 continues to ring in the process of repeatedly executing steps S11a to S11d until the overtime elapses as described above, an appropriate braking operation is not performed, and the vehicle travels beyond the overspeed for more than the overtime. If it is continued, the determination in step S11d becomes YES and the process proceeds to step S11h. In step S11h, it is determined whether the OF is 1, that is, whether it is the first determination after the determination in step S11d. If the first determination is made, the determination in step S11h becomes NO and the process proceeds to step S11i. Set OF to 1.

Thereafter, the process proceeds to step S11j, and it is determined that the overspeed has occurred, and the time is written and recorded in a predetermined area in the IC memory card 4 by the time data from the clock 34, and in the following step S11k, the time in the IC memory card 4 is recorded. The number of times the predetermined area 44b is over is incremented, and in the next step S11m, the IC
After incrementing the accumulated time of the predetermined area 44c in the memory card 4, the process returns to the main routine. Even after the OF is set to 1 in step S11i, step S1
When the determinations of 1a and 11d are YES,
The determination in step S11h is YES and step S1
In 1n, the occurrence time recorded and recorded in step S11j and the overtime area prepared as a set are incremented here, and the process returns to the main routine via step S11m.

After that, while the determinations in steps S11a and 11d are YES, the overtime area and the overaccumulation time area 44c are sequentially incremented so that the continuation time for each speed over and the past speed over are accumulated. Time and is updated in the IC memory card 4,
It will be kept as a record.

In the above embodiment, the general overspeed, the general overtime, the high speed overspeed and the high speed overtime are used as the data RO.
Although fixedly written in the M31b in advance, if the data stored in each area can be rewritten at any time and the data can be held without backing up, the data ROM 31b is replaced by an EP ² ROM or the like. A non-volatile rewritable external memory may be connected to the CPU 31.

When such an external memory is used, a setting memory card in which various setting data such as general overspeed, general overtime, high speed overspeed and high speed overtime are written is separated from the IC memory card 4. , And the setting data in the setting memory card is stored in the CPU 31 by replacing the IC memory card 4 and inserting and connecting it.
Can be read by and written to external memory.

Further, the communication I / O as shown by the dotted line in FIG.
By providing the F circuit 38, it is possible to use a built-in storage means instead of the portable IC memory card 4 and record operation data in this storage means.
Then, the operation data recorded in this storage means is used as the communication I
It can be sent to the analysis device via the / F circuit 38 for analysis. In this case, the above-mentioned various setting data are also transmitted from the analyzer side to the C through the communication I / F circuit 38.
It can be read by the PU 31 and written in the external memory.

As is clear from the explanation of the above-mentioned flow chart, the CPU 31 executes the above-mentioned flow chart to exceed the predetermined overspeed by changing the momentarily changing vehicle speed measured at a constant time and converted into digital data. In addition to the writing means 31 ₁ for writing to the IC memory card 4 as the storage means together with the information indicating the fact, a detection means for detecting that the period during which the vehicle speed exceeds the overspeed is equal to or longer than a predetermined overtime. I am working as 31 ₂ .

Further, the CPU 3 which functions as the writing means 31 ₁
In addition to writing the information indicating that the vehicle speed has exceeded the overspeed in the storage means 4 according to the detection by the detection means 31 ₂ ,
Depending on the detection by the detection unit 31 _2, and the number of writing means 31 ₁₁ for writing the number of times the vehicle speed exceeds the overspeed in the IC memory card 4, depending on the detection by the detection unit 31 _2, the time from the clock 34 as clock means It also functions as an occurrence time writing means 31 ₁₂ for writing the time when the vehicle speed exceeds the overspeed to the IC memory card 4 based on the data.

[0044]

As described above, according to the present invention, when the vehicle speed exceeds the overspeed, an alarm is generated, and the overspeed is exceeded only when the alarm is ignored and the vehicle continues to travel for a predetermined overtime. Since it is recorded that the vehicle has traveled for a short time, and it is not recorded just by exceeding the short-time excess speed, driving is performed as in the conventional case where recording was performed even when the short-time excess speed was exceeded. The person does not have to pay attention to the display of the speedometer, without impairing the driver's safe driving,
You can get a record of overspeed.

Also, by recording the number of times the overspeed is exceeded, it is possible to know how many times the vehicle has run while ignoring the warning, and it is possible to appropriately perform warning and recording on the general road and the highway. By recording the time at which the speed exceeds the overspeed, it is possible to know the time zone during which the vehicle ignores the warning and is traveled, so that the driver can be properly instructed to drive safely.

[Brief description of drawings]

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

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

FIG. 3 is a diagram showing setting data stored in a data ROM in FIG.

FIG. 4 is a diagram showing a work area of a RAM in FIG.

FIG. 5 is a diagram showing a data recording format on an IC memory card.

FIG. 6 is a flowchart showing work performed by the CPU in FIG.

FIG. 7 is a flowchart showing a specific process of the steps in FIG.

FIG. 8 is a diagram showing a general schematic configuration of a digital vehicle operation data recording device.

[Explanation of symbols]

31 ₁ CPU (writing means) 31 ₁₁ CPU (count writing means) 31 ₁₂ CPU (occurrence time writing means) 31 ₂ CPU (detection means) 34 clock (clock means) 35 general / high-speed changeover switch (switching means) 37 Buzzer (alarm means)

Claims (4)

[Claims] 1. A vehicle-mounted vehicle, which measures a vehicle speed that changes from moment to moment at regular time intervals and converts it into digital data, which is written in a storage means together with information indicating that the vehicle speed has exceeded a predetermined overspeed. In a digital vehicle operation data recording device having a writing means, an alarm means for issuing an alarm while the vehicle speed exceeds the overspeed, and a period during which the vehicle speed exceeds the overspeed is a predetermined overtime or more. The writing means writes information indicating that the vehicle speed exceeds the excess speed in the storage means in response to the detection by the detection means. Digital vehicle operation data recording device. 2. The writing means according to claim 1, further comprising a number-of-times writing means for writing the number of times the vehicle speed exceeds the excess speed in the storage means in response to the detection by the detection means. Digital vehicle operation data recording device. 3. A switching means for selecting one of preset values for general roads and expressways for one or both of the excess speed and the excess time. 2. A digital vehicle operation data recording device according to 2. 4. A time means for generating time data indicating a current time, wherein the writing means responds to the detection by the detecting means with the time data from the time means when the vehicle speed exceeds the excess speed. 4. The digital vehicle operation data recording device according to claim 1, further comprising: an occurrence time writing unit that writes the data in the storage unit.