JPH11125584A - Data recording and analyzing device for vehicle traveling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To precisely specify the cause and position of a fault in a vehicle. SOLUTION: Traveling data are measured at the time when a vehicle is travelling, and at the same time, traveling trace at that time is calculated based on position measurement information from a GPS satellite, and the both data are recorded (S1 and S2). Furthermore, when the occurrence of a fault is detected from each control unit being mounted in a vehicle, position data at that time are recorded while being linked to the traveling trace (S4). When the traveling trace is indicated at a display part on analysis operation, a fault occurrence position is displayed on the traveling trace, and at the same time the traveling data on the occurrence of the fault is displayed. A working personnel analyzes the cause of the fault based on the traveling trace and data before and after the fault occurs, and specifies the position of the fault.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data recording / analyzing apparatus for a vehicle, which allows a user to quickly and accurately ascertain the location and details of a failure in a vehicle.

[0002]

2. Description of the Related Art Conventionally, as a navigation device mounted on a vehicle, positioning information such as map information and position information from a GPS (Global Positioning Satellite System) is received to measure the position of a vehicle, and the current driving data is measured. And the current position of the vehicle on the map is displayed.

On the other hand, Japanese Patent Application Laid-Open No. Hei 6-288873 records time, vehicle speed, etc. in addition to the position information obtained from the navigation device as information when a vehicle breaks down. A technology has been disclosed that makes it possible to grasp whether a failure has occurred and facilitates the investigation of the cause of the failure at the time of repair at a dealer or the like. Can be facilitated.

[0004]

However, according to the prior art, since only the traveling data at the time of occurrence of a failure is recorded, it is effective for specifying the location of the occurrence of the failure. However, there is a problem that the stored data is not sufficient to specify whether the failure has occurred due to other causes, and it is difficult to clarify the cause of the failure.

The present invention has been made in view of the above circumstances, and has as its object to provide a vehicle running data recording and analyzing apparatus capable of identifying and analyzing the cause of a failure.

[0006]

According to a first aspect of the present invention, there is provided a data recording / analyzing apparatus for driving a vehicle.
A measuring device mounted on a vehicle and configured to measure a traveling state of the vehicle and a data analysis device for reading and displaying the traveling data measured by the measuring device, wherein the measuring device receives positioning information input from outside. A receiving circuit, a traveling state detecting unit that detects a traveling state of the own vehicle, and measures a position of the own vehicle based on the positioning information received by the receiving circuit and calculates a traveling locus of the own vehicle based on the data of the own vehicle position. A data processing unit that calculates travel data based on a measurement signal output from the travel state detection unit; and a data recording unit that records the travel locus data calculated by the data processing unit and the travel data. The data analysis device can display the traveling locus data and the traveling data recorded in the data recording unit, and can display both the data. Characterized in that a display unit.

[0007] A second vehicle data recording / analysis device for traveling comprises:
In the first vehicle traveling data recording / analyzing device, the measuring device is provided with a failure detecting section for detecting whether or not each control unit mounted on the vehicle has a failure. The position data at the time when the failure is detected by the detection unit is recorded in the data recording unit in a state where the position data is linked to the data of the traveling locus.

[0008] A third vehicle traveling data recording and analyzing apparatus comprises:
In the first or second vehicle traveling data recording / analyzing apparatus, when the traveling data display section is specified from the traveling locus displayed on the display section, the processing data corresponds to the traveling data display section. Is read from the data recording unit and output to the display unit.

[0009] A fourth vehicle traveling data recording / analyzing apparatus comprises:
In the second vehicle traveling data recording / analyzing device, a traveling data recording threshold is set in the data processing unit, and when the failure detection unit does not detect the occurrence of a failure, the traveling locus of the traveling locus not less than the threshold is set. Only the data and the traveling data are recorded in the data recording unit.

[0010] A fifth vehicle traveling data recording / analyzing apparatus comprises:
In the first vehicle traveling data recording / analyzing device, when the traveling data different from a preset data search condition is detected, the data processing unit may correspond to the traveling data displayed on the display unit. The display is switched to a display in which the traveling section can be identified.

A sixth vehicle traveling data recording / analyzing apparatus is:
In the first vehicle traveling data recording / analyzing apparatus, the processing unit performs three-dimensional image processing for moving a traveling locus at a constant traveling distance or at regular time intervals, and outputs a processed three-dimensional image signal to the display unit. It is characterized by doing.

That is, in the first vehicle traveling data recording / analyzing apparatus, during traveling, a receiving circuit provided in a measuring device for measuring the traveling state of the vehicle mounted on the vehicle receives positioning information inputted from the outside, In addition, the traveling state detection unit detects the traveling state of the own vehicle based on output signals from various sensors and the like. Then, the data processing unit measures the own vehicle position based on the positioning information, calculates a travel locus based on the own vehicle position data, and calculates travel data based on the signal indicating the running state, and calculates the travel locus of the travel locus. The data and the traveling data are recorded in the data recording unit. The data recorded in the data recording unit is read by a data analyzer. Then, the data of the travel locus and the travel data read by the processing unit of the data analysis device are image-processed and output to the display unit. The operator specifies a traveling section to be analyzed from the traveling locus displayed on the display unit and searches for traveling data corresponding to the traveling section to perform a data analysis operation.

In the second vehicle traveling data recording / analyzing apparatus, the first vehicle traveling data recording / analyzing apparatus is provided with a failure detecting section in the measuring device, and each of the failure detecting sections is mounted on a vehicle. If the control unit fails,
The data processing unit calculates position data at the time of occurrence of a failure, and records the position data in the data recording unit in a state of being linked to the traveling locus data.

In a third vehicle traveling data recording / analyzing apparatus, in the first or second vehicle traveling data recording / analyzing apparatus, a worker can obtain a desired traveling data display section from a traveling locus displayed on the display section. Is specified, the processing unit reads the travel data corresponding to the travel data display section from the data recording unit and displays the read travel data on the display unit.

In a fourth vehicle traveling data recording / analyzing apparatus, the data processing section may be arranged such that when the failure detecting section does not detect any failure of each control unit, Only the data of the travel locus equal to or more than the travel data recording threshold and the travel data are recorded in the data recording unit.

In a fifth vehicle traveling data recording / analyzing apparatus, in the first vehicle traveling data recording / analyzing apparatus, when the data processing section detects traveling data different from a preset data retrieval condition, A corresponding traveling section on the traveling locus displayed on the display section is switched to an identifiable display and displayed.

According to a sixth vehicle traveling data recording / analyzing apparatus, in the first vehicle traveling data recording / analyzing apparatus, the processing section performs a three-dimensional process of moving a traveling locus at a constant traveling distance or at regular intervals. And outputs the processed three-dimensional image signal to the display unit.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. The traveling data recording and analyzing device for a vehicle employed in the present embodiment includes a measuring device A and a data analyzing device B, both of which are mainly constituted by a known microcomputer, and the measuring device A is mounted on a vehicle. The data analysis device B is provided, for example, in a dealer, a laboratory, or the like.

As shown in FIG. 1, the measuring device A includes a data processing section 1, a GPS receiving circuit 2 as a receiving section, a running state detecting section 3, a data recording section 4, a fault detecting section 5, and a fault detecting section. It comprises an alarm means 6 such as a buzzer for informing the driver.

The GPS receiving circuit 2 receives positioning information output from a GPS satellite.

The running state detecting section 3 comprises various sensors such as an engine speed sensor, a vehicle speed sensor, a yaw rate sensor, a lateral acceleration sensor, a steering angle sensor, etc., and switches for detecting running data indicating a vehicle state during running. The signals from the sensors and switches are output to the data processing unit 1.

The failure detecting section 5 is connected to each control unit 7 constituting the electronic control unit of the vehicle. The control unit 7 includes, for example, an engine control unit, an airbag control unit, a transmission control unit,
A BS control unit and an air-conditioning control unit. Based on a failure signal output from each of these control units 7, the presence or absence of a failure in a vehicle mechanism connected to each control unit 7 is determined. Signal to data processing unit 1
Output to

The data processing section 1 measures the absolute position of the own vehicle based on the positioning information received by the GPS receiving circuit 2, calculates a running locus based on the measured own vehicle position data, and further calculates the running trajectory. The travel data is measured based on various signals output from the state detection unit 3 and the failure detection unit 5
The presence or absence of a failure is monitored based on the signal output from. Then, the trajectory data, the travel data, and the failure information are output to and stored in the data recording unit 4 including a recording medium such as a magnetic disk or a magneto-optical disk.

When a failure occurs, the alarm means 6 is operated to notify the driver of the failure. The warning means 6 may be a warning lamp provided in the instrument panel, a liquid crystal monitor incorporated in a navigation system, or the like.

On the other hand, as shown in FIG. 2, the data analyzing apparatus B comprises an apparatus main body 11, a display section 12 and a keyboard 1
3, a mouse 14, and a printer 15. The processing unit 11a is built in the apparatus main body 11.

Next, a data measurement routine executed by the data processing section 1 provided in the measuring device A will be described with reference to a flowchart shown in FIG.

The measuring device A sets the ignition switch to O
If N, it is started in conjunction with this. Note that a configuration may be adopted in which a start switch is provided separately and the start is performed independently of the ignition switch.

First, in step S1, the GPS receiving circuit 2
The traveling locus is calculated on the basis of the vehicle position data measured based on the absolute position information from the GPS satellite received in step (1), and is recorded in the data recording unit 5. Next, in step S2, an output signal from a sensor or a switch indicating the traveling data is read from the traveling state detecting unit 3 and recorded in the data recording unit 5.

Next, the process proceeds to step S3. A failure signal indicating whether or not a failure has occurred in each control unit 7 is taken in from the failure detection unit 5.

When the occurrence of a fault is detected, the position data at the time of the occurrence of the fault is linked to the traveling locus data and recorded in step S4, and the alarm means 6 is activated in step S5 to notify the driver of the occurrence of the fault. The process proceeds to step S6. If no failure is detected in step S3, the process proceeds directly to step S6.

In step S6, it is determined whether or not the ignition switch has been turned off.
The process returns to step S3, and when the switch is off, the process ends.

When the driver knows the occurrence of a failure by the operation of the alarm means 7 and brings the vehicle to a dealer or the like, the dealer or the like, travel locus data recorded in the data recording unit 4,
The running data and the position where the failure occurred are taken into the processing unit 11a of the data analysis device B, and the running data of the vehicle is analyzed.

This analysis operation is performed according to a data analysis routine shown in FIG. When the operator turns on the switch of the data analysis device B, a selection menu is displayed on the display unit 12, and when the operator selects the item of "failure analysis", the traveling locus data is read in step S11, and in step S12, The travel locus data is displayed on the display unit 12. At this time, as shown in FIG. 5, the display unit 12 is vertically divided into two parts, and the traveling locus c, the failure occurrence position d, and the traveling data e at the time of failure occurrence are displayed on the upper screen 12a.

Next, in step S13, it is determined whether or not a section for displaying the traveling data has been selected. If not, the process waits. If not, the process proceeds to step S13.
Proceed to 14.

As shown in FIG. 5, for example, as shown in FIG. 5, the pointer f displayed on the display unit 12 is moved over the analysis target of the travel locus c by operating the mouse 14, as shown in FIG. Is designated, the traveling section c ′ set on the traveling locus c is highlighted, and step S14 is performed.
Then, the corresponding traveling data is read, and step S1 is executed.
In step 5, the travel data g is displayed on the lower screen 12b of the display unit 12, and the routine exits. In this case, a configuration may be adopted in which the type of traveling data to be displayed is specified and only specific data is displayed.

Based on the travel trajectory c and the travel data g displayed on the display unit 12, the operator can determine what kind of travel was performed until the failure occurred, and the travel data when the failure occurred. Is analyzed to identify the cause of the failure and the location of the failure.

As described above, according to the present embodiment, not only the failure data but also the travel data up to the failure are recorded and displayed. Therefore, not only the failure location but also the failure cause is analyzed and specified. can do.

Incidentally, if the recording medium of the data recording section 5 is configured to be exchangeable and is exchanged periodically, it is possible to prevent data loss due to insufficient recording capacity.

FIGS. 6 and 7 show a second embodiment of the present invention. Regarding the recording of vehicle data, it is possible to record all data from when the ignition is turned on until it is turned off, but it is also possible to record only necessary data.

That is, as shown in FIG. 6, a detachable operating means 8 such as a keyboard is provided in the data processing section 1 to enable setting of a threshold value, and a data value equal to or larger than running data considered to be generated in normal running. Is measured,
Only the traveling data is recorded.

More specifically, as shown in the flowchart of FIG. 7, it is determined in step S21 whether or not the data threshold value is set by a keyboard input or the like. If not set, the process proceeds to step S1. Proceeding to step S22, a threshold is input.

Then, the vehicle position and travel data are read in S1 and S2, and it is determined in step S3 whether or not a failure has occurred. If no failure has occurred, the process proceeds to step S23 and is set in step S22. The driving data recorded before the predetermined time or the predetermined distance is deleted while leaving only the data equal to or more than the threshold value.

If it is determined in step S3 that a failure has occurred, the operation proceeds to step S4, where the failure occurrence position is recorded, and in step S5 the alarm means 6 is operated to notify the driver of the occurrence of the failure.

The driving data is deleted only when at least one of the vehicle data does not exceed the set threshold value. Data within a predetermined time or a predetermined distance of the occurrence of the failure and data exceeding the threshold value are deleted. It does not hinder the elucidation of the cause of the failure.

According to the present embodiment, the amount of data recorded in the data recording unit 5 can be reduced by deleting unnecessary data.

FIGS. 8 to 11 show a third embodiment of the present invention. The measuring device A and the data storage device B shown in the first and second embodiments can be used not only for analyzing the cause of a failure when a failure occurs but also as a measuring device for measuring various data by a driving test or the like. it can. Hereinafter, a case where the device is used as a measuring device will be described.

In general, when developing a control system such as a four-wheel steering system (4WS), various running data is measured with an actual vehicle, and the operation of the control system is evaluated by analyzing the measured running data. I have.

The measurement of the traveling data is performed by the measuring device A shown in FIG. 1, and the traveling locus data and the traveling data are recorded in the data recording section 4.

When the measurement is completed, the operator takes the traveling locus data and traveling data recorded in the data recording unit 4 into the processing unit 11a of the data analysis device B and performs an analysis operation.

This analysis operation is performed according to a data analysis routine shown in FIG. When the operator turns on the switch of the data analysis device B, a selection menu is displayed on the display unit 12, and when the operator selects the item of "data analysis", an allowable value of each traveling data is set in step S31. It is determined whether or not to perform the setting.
Proceed to step S32. If not, jump to step S33.

In step S32, an allowable value is set, and the color of the travel locus data, the thickness of the line, and the like are changed and displayed so that the section in which the travel data is measured out of the allowable value is easily identified.

Subsequently, when the operation proceeds to step S33, a selection item for displaying the traveling locus data in two dimensions or three dimensions is displayed on the display unit 12, and when the operator selects the two-dimensional display, the operation proceeds to step S33. Proceeding to S34, the traveling locus c is displayed on the upper screen 12a, which is divided into upper and lower parts of the display unit 12, by two.
Dimensional display.

Next, in step S35, it is determined whether or not the travel data display section has been determined. This driving data display section is, for example, as shown in FIG.
When the pointer f displayed in 2 is moved on the analysis target of the travel locus c by operating the mouse 14, and the display section is designated, the travel section c ′ set on the travel locus c is highlighted and the step is performed. The corresponding driving data is read in S36, and the lower screen 12 of the display unit 12 is read in step S37.
The driving data h is displayed in b, and the routine exits.

The operator analyzes the operation state of the control system such as the 4WS system based on the traveling data h displayed on the display unit 12.

On the other hand, if three-dimensional display is selected in step S33, the flow branches to step S38, where the traveling locus is set to three.
In order to display the three-dimensional display, image processing is performed to move the traveling locus at a constant distance or at regular intervals, and the process returns to step S34, and the traveling locus simulated on the lower screen 12a on the display unit 12 is displayed. Display c.

This three-dimensional display is effective, for example, when the same traveling course is made a plurality of rounds, and as shown in FIG. Is displayed spirally, the pointer f indicating the display position can be quickly moved to a desired position on the running track by operating the mouse 14 with the mouse 14, and the number of laps can be easily reduced while visually recognizing the screen 12a. Can be counted. Note that the pointer f may be operated using a joystick or an arrow key provided on a keyboard instead of the mouse 14.

FIG. 11 shows an example of the travel locus and travel data displayed on the upper screen 12a of the display unit 12. As shown in FIG. FIG. 7A shows a traveling locus c at the time of a double lane change. As shown in FIG. 7B, when a section G when returning the vehicle to the initial traveling lane is designated by the pointer f, the same is performed. As shown in FIG. 3C, the display unit 12 immediately displays the traveling data h measured during traveling in the section G.

As described above, according to the present embodiment, by designating the section of the traveling locus, the corresponding traveling data is read, so that the traveling course such as the traveling data of the straight traveling, the traveling data of the curve traveling, etc. Can be instantaneously displayed on the screen, and the analysis work can be started immediately.

In a section of the travel locus displayed on the display section 12 where the travel data is out of the allowable value, the line color,
Since the line width, the line type, and the like are changed and displayed, an operation section indicating a malfunction of the control system can be quickly identified, and the analysis operation can be promptly performed.

In this case, the recording of the traveling data is performed by setting a data threshold value that is considered to be measured during normal traveling, and recording the traveling data only when the data threshold value is exceeded. The recording capacity of the recording unit 4 can be reduced.

[0061]

As described above, according to the present invention, the measuring device measures the traveling locus data and the traveling data at the time of actual vehicle, and at the time of analysis, the data analyzing device analyzes the traveling locus based on the traveling locus data. Since the section is specified and the traveling data of the corresponding section is searched and displayed, even if the measurement of the traveling data is performed over a relatively long distance, the traveling section to be analyzed can be easily determined. And the analysis work can be speeded up and the efficiency can be improved.

In this case, the measuring device detects whether or not each control unit mounted on the vehicle has a failure.
By recording the position data at the time of the occurrence of a failure in a state in which the traveling trajectory data is ringed, the traveling trajectory data can be analyzed in addition to the traveling data at the time of the occurrence of the failure. Sufficient data necessary for specifying the location can be obtained, and even if the failure has no reproducibility, the cause and the failure location can be accurately specified.

Further, since a desired traveling data display section is specified from the traveling locus displayed on the display section, the traveling data of the traveling section is displayed. There is no need to search for travel data of the travel section to be analyzed, and the analysis work can be speeded up.

When no failure is detected from each of the control units, if only the traveling locus data exceeding the traveling data recording threshold value and the corresponding traveling data are recorded, the data capacity to be recorded in the data recording section is increased. , And it is possible to record more data only leading to elucidation of the cause of the failure.

Further, when running data different from the preset data search condition is detected, the running section on the running locus corresponding to the detected position is displayed in an identifiable display. Can instantaneously identify a section indicating abnormal traveling data, and can improve the efficiency of analysis work.

Further, by performing a three-dimensional process of moving the traveling locus at a constant traveling distance or at regular intervals and displaying the processed three-dimensional image on the display unit, the degree of recognition of the traveling locus is improved, and the analysis work is performed. Can be performed more efficiently.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of a measuring device according to a first embodiment.

FIG. 2 is a schematic diagram of the data analyzer.

FIG. 3 is a flowchart showing a data measurement routine.

FIG. 4 is a flowchart showing a data analysis routine.

FIG. 5 is an explanatory diagram of a traveling locus and traveling data displayed on the display unit.

FIG. 6 is a circuit block diagram of a measuring device according to a second embodiment.

FIG. 7 is a flowchart showing a data measurement routine.

FIG. 8 is a flowchart showing a data analysis routine according to a third embodiment.

FIG. 9 is an explanatory diagram of a traveling locus and traveling data displayed on the display unit.

FIG. 10 is an explanatory diagram of a traveling locus displayed as a three-dimensional image on the display unit.

FIG. 11 is an explanatory diagram of another traveling locus and traveling data displayed on the display unit.

[Explanation of symbols]

 A, A 'measuring device B data analyzing device 1 data processing unit 2 receiving circuit 3 running state detecting unit 4 data recording unit 5 failure detecting unit 7 control unit 11a processing unit 12 display unit c ... running locus c '... running data display section h ... running data

Claims (6)

[Claims] 1. A vehicular traveling data recording / analysis device comprising: a measurement device mounted on a vehicle for measuring a traveling state of the vehicle; and a data analysis device for reading and displaying traveling data measured by the measurement device. A receiving circuit for receiving positioning information input from the outside; a traveling state detecting unit for detecting a traveling state of the own vehicle; and a measuring unit that measures the position of the own vehicle based on the positioning information received by the receiving circuit and the position of the own vehicle. A data processing unit that calculates a travel locus of the own vehicle based on the data of the vehicle and that calculates travel data based on a measurement signal output from the travel state detection unit; A data recording unit for recording traveling data; and the data analysis device includes: a data of the traveling locus recorded in the data recording unit; and the traveling data. And a display unit capable of displaying both of the data. 2. The measurement device according to claim 1, further comprising: a failure detection unit configured to detect a failure of each of the control units mounted on the vehicle. The data processing unit detects a failure with the failure detection unit. 2. The data recording and analyzing device for vehicle traveling according to claim 1, wherein the position data at that time is recorded in the data recording section in a state of being linked to the data of the traveling locus. 3. The processing unit reads running data corresponding to the running data display section from the data recording section when the running data display section is specified from the running locus displayed on the display section. The data recording / analyzing device for a vehicle traveling according to claim 1 or 2, wherein the data is output to the data recording / analyzing device. 4. A driving data recording threshold value is set in the data processing section. When the failure detecting section does not detect the occurrence of a failure, only the data of the traveling locus and the traveling data which are equal to or larger than the threshold value are transmitted. 3. The data recording / analyzing apparatus for a vehicle according to claim 2, wherein the data is recorded in the data recording section. 5. A display for identifying a corresponding traveling section on the traveling locus displayed on the display unit when the traveling data different from a preset data search condition is detected. 2. The data recording / analyzing apparatus for vehicle running according to claim 1, wherein the switching is performed. 6. The processing section performs three-dimensional image processing for moving a traveling locus at a constant traveling distance or at regular intervals.
2. The data recording / analyzing apparatus according to claim 1, wherein the processed three-dimensional image signal is output to the display unit.