JPH11247709A - Data analyzing device of electronic control device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with the new setting for measurement corresponding to the analyzing conditions every analyzing conditions and to rapidly analyze the data by comprising a condition setting means for setting the analyzing conditions stored in a measuring means, and extracting and analyzing the data satisfying the analyzing conditions set by this means. SOLUTION: A data analyzing device of an electronic control device for vehicle comprises a control circuit 1 and an interface circuit 2 as a measuring means. The interface circuit 2 relays the measurement data supplied from an ECU 3 to the control circuit 1, and comprises a monitor circuit 4 comprising a DP-RAM in which the total measurement data from the start of the measurement to the end of the measurement is stored. The data anaylization is performed in the control circuit 1 by using the stored measurement data by extracting and analyzing the data satisfying the analyzing conditions determined from the stored measurement data, and immediately analyzing the data in cases where the data is analyzed to the same parameter with the different analyzing conditions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data analyzer for analyzing data of detection or control parameters obtained during control in an electronic control unit for controlling an internal combustion engine mounted on a vehicle.

[0002]

2. Description of the Related Art An electronic control unit for a vehicle is for controlling an operating state of a vehicle-mounted internal combustion engine to an optimum state.
For example, in an internal combustion engine that supplies fuel using injection, an electronic fuel injection device that controls the amount of fuel to be supplied by detecting the operating state of the vehicle and the engine with a sensor and calculating and controlling the amount according to the sensor detection value is known. well known.

[0003] The control operation state of such an electronic control device,
For example, in order to determine whether a sensor or a control device main body is operating normally, an electronic control device is actually mounted on a vehicle, an engine is operated, and a test is performed by running the vehicle. . In the test, a sensor output value or a calculated value indicating the operation state of the engine from the electronic control device is measured by a measuring instrument and stored as data in a memory,
After that, data analysis was performed by a data analyzer.

When measuring a value indicating the operating state of an engine for data analysis, measurement conditions have been set by a measuring instrument corresponding to the data analysis. For example,
When extracting and analyzing data of a voltage of a sensor of a predetermined engine operating parameter such as an engine speed exceeding a predetermined voltage (for example, 3 V), such a voltage condition is applied to a measuring instrument. The settings have been made. That is, in the data analysis device, data satisfying the analysis conditions can be obtained from the measuring instrument, and the analysis is performed based on the data.

[0005]

However, when it is desired to perform data analysis on the same engine operating parameters under other analysis conditions, a new measurement setting corresponding to the analysis conditions is performed on the measuring instrument and the measurement is performed again. Needed. Therefore, an object of the present invention is to provide a data analysis device of a vehicle electronic control device that enables data analysis without newly performing measurement setting corresponding to the analysis condition for each analysis condition.

[0006]

SUMMARY OF THE INVENTION A data analysis device according to the present invention is a data analysis device for analyzing data of detection or control parameters obtained during control in an electronic control device for controlling an internal combustion engine mounted on a vehicle. Measuring means for unconditionally measuring and storing data of detection or control parameters, condition setting means for setting analysis conditions for the measurement data stored in the measuring means, and And analysis means for extracting and analyzing data satisfying the analysis conditions set by the condition setting means.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. The data analysis device of the vehicle electronic control device shown in FIG. 1 includes a control circuit 1 and an interface circuit 2. An ECU (Electronic Control Unit) 3 of an electronic control unit is connected to the interface circuit 2 as a measuring means, as described later. The control circuit 1 is composed of a microcomputer and has a built-in display. As the control circuit 1, for example, a notebook personal computer can be used. However, a schematic configuration of the control circuit 1 is shown in FIG. 2 for ease of explanation. That is, in the control circuit 1, the CPU
A (central processing unit) 11, a RAM (random access memory) 12, and a ROM (read only memory) 13 are connected to an internal bus 14, and the internal bus 14 is connected to an external bus 1 via a chipset 15 for timing control.
6 is connected. A hard disk drive 17 and a display control circuit 18 are connected to the external bus 16, and the display control circuit 18 controls display of a display 19 according to an instruction from the CPU 11. A keyboard 20 is connected to the internal bus 14 via an operation control circuit 20a. The keyboard 20 is provided with at least alphabetic character keys and numeric keys in addition to a function key, an enter key, an arrow key, an ESC (escape) key, which will be described later.

The interface circuit 2 basically relays measurement data (actual data) supplied from the ECU 3 to the control circuit 1 based on a command from the control circuit 1, and includes a monitor circuit 4, an analog circuit 5 and a bus connection circuit 6. In the monitor circuit 4, as shown in FIG. 3, a CPU 21, a ROM 22, a RAM 23, an input / output circuit 24, and a DP (dual port) -RAM 25
Are connected by a common bus. Input / output circuit 24
Has a port for serial communication conforming to the standard such as RS-232C, to which not only the ECU 3 but also the temperature measurement unit 7 is connected. The CPU 21 controls the operation of the monitor circuit 4 and operates according to a program stored in the ROM 22 in advance. RAM 23 stores this C
The data necessary for the control operation of the PU 21, for example, the connection state and the like are stored in a port for serial communication at present. The DP-RAM 25 has two ports for input and output, and receives data supplied from the ECU 3 or the control circuit 1.
This is for temporarily storing the command supplied from. The DP-RAM 25 is connected to the bus connection circuit 6, and this connection line includes an interrupt request line as well as a data line.

In the analog circuit 5, as shown in FIG.
2, RAM 33, input / output circuit 34 and DP-RAM 35
Are connected by a common bus. However, the input / output circuit 34 includes an A / D converter, a D / A converter, and a pulse measuring device (both not shown). These are connected to an external voltage output type output device (both not shown) such as a voltage output type sensor or a pen recorder via an analog signal port.

The bus connection circuit 6 is connected to the DP-R of the monitor circuit 4.
This is for mechanically and electrically connecting each input and output of the AM 25 and the DP-RAM 35 of the analog circuit 5 to the external bus 16 of the control circuit 1. The ECU 3 connected to the data analyzer having such a configuration includes a CPU 5 as shown in FIG.
1, a ROM 52, a RAM 53, a serial communication input / output circuit 54, a sensor input interface circuit 55, and an actuator drive circuit 56, which are connected to each other by a common bus. A plurality of sensors are connected to the sensor input interface circuit 55, and an actuator such as an injector is connected to the drive circuit 56. The sensors include an oxygen concentration sensor that generates an output voltage according to the oxygen concentration in the exhaust gas in the exhaust pipe of the internal combustion engine, an intake pipe internal pressure sensor that generates a voltage according to the absolute pressure in the intake pipe of the internal combustion engine, and an internal combustion engine. Various sensors such as a crank angle sensor that generates a pulse signal corresponding to the number of revolutions of the crankshaft, a cooling water temperature sensor that detects the temperature of the cooling water of the internal combustion engine, and a throttle opening sensor that detects the opening of the throttle valve. is there.

A CPU 51 of the ECU 3 operates in accordance with a program stored in a ROM 52 in advance, reads output values of a plurality of sensors via a sensor input interface circuit 55, stores the read values in a RAM 53, and controls an actuator in accordance with the output values of the sensors. Is generated and supplied to the drive circuit 56. For example, when driving the injector, the basic fuel injection amount is calculated from the intake pipe absolute pressure based on the output value of the intake pipe internal pressure sensor and the engine speed obtained from the output value of the crank angle sensor. The fuel injection amount is calculated by correcting the amount with air-fuel ratio information obtained from the output value of the oxygen concentration sensor, engine temperature information obtained from the cooling water temperature sensor, and the like, and the injector is driven according to the fuel injection amount. As described above, in the ECU 3, values such as read values of various sensors, intermediate values such as the basic fuel injection amount, and drive values such as the fuel injection amount are sequentially obtained with the passage of time. Each value is sequentially written and updated as a real data at a predetermined address of the RAM 53. The data analyzer reads each data of the RAM 53 and analyzes the data. Therefore, during data analysis, the serial communication port of the serial communication input / output circuit 54 of the ECU 3 is connected to the serial communication port of the input / output circuit 24 of the monitor circuit 4.

The operation when the power is turned on to the data analyzer while the ECU 3 is connected to the data analyzer will be described. Naturally, it is assumed that the ECU 3 is mounted on an automobile and performs a control operation. As shown in FIG. 5, the CPU 11 of the control circuit 1 first causes the display control circuit 18 to display a monitor image (step S5).
1). FIG. 6 shows a monitor image, each of which is surrounded by 16 frames serving as a channel window for displaying parameter values obtained by the ECU 3. FIG. 7 specifically shows the contents of each display area in the channel window. FIG.
, “Ch No.” is displayed slightly to the left of the channel window, and is a channel number set by the user where the parameter value to be displayed is assigned. The channel number in the channel window is, for example, up to 48 channels, but the number of channels simultaneously displayed on the screen is 16 types of parameters, that is, 16 channels. “Label name” is a name indicating a parameter for displaying a value. For example, if the label name is "NE", the engine speed is "TA", if it is "TA", the engine intake temperature, "PBA"
Then, "absolute pressure in the intake pipe". The “monitor display value” is a hexadecimal real data value display of the parameter displayed by the label name, and “hex” next to it indicates that it is a hexadecimal number. The “physical value display” is a decimal number display that uses a unit to indicate the parameter value displayed by the label name, and the “physical value unit” next to it is the unit. For example, the physical value unit of the engine speed is rpm, and the physical value unit of the absolute pressure in the intake pipe is mmHg.

In the monitor screen shown in FIG. 6, the display intermittently arranged at the bottom is composed of ten function keys f-1 to f-10 provided on the keyboard 20 of the control circuit 1.
It is a guide display (not shown). "Settings" at the left of the screen
Corresponds to the function key f · 1, and then to the right corresponds to the function key number in the display order. CPU
Numeral 11 determines whether or not the function key f · 9 corresponding to “environment” has been operated in the display state of the monitor image (step S2). When the function key f · 9 is operated, the environment setting mode is set, and the display control circuit 18 causes the selected image of the RAM address file to be displayed on the monitor image of the display 19 as a window (step S3). The RAM address file is a file that is different for each ECU or vehicle in which the ECU is mounted. As shown in FIG. 8, a label name for each parameter, a description of the label name,
Address and data size W of internal RAM 53 of ECU 3
/ B and a file in which the LSB code is recorded. There is a corresponding RAM address file for each ECU 3 connected to the data analysis device. A plurality of RAM address file names registered in advance are successively displayed in a window on the display screen, and one of the plurality of RAM address file names is indicated by an arrow provided on the keyboard 20 of the control circuit 1. It is highlighted by the cursor operation with the key. After the desired RAM address file name is selected, the selection is determined by operating the enter key. After execution of step S3, the CPU 11 sets R
It is determined whether the AM address file name has been selected and determined (step S4). When the RAM address file name of 1 is determined, the RAM address file name is read (step S5), and the display of the selected image of the RAM address file is terminated (step S6).

The data size W / B in the RAM address file indicates whether the data is word data (2-byte data) or 1-byte data. L
The SB code is a code for specifying LSB data in the LSB file. The LSB file has a file structure as shown in FIG. That is, a code number, which is an LSB code, a label name, a physical quantity unit, a formula number,
The portion consisting of the data length and the physical conversion parameters f ₀ , f _1, ... Is the LSB data corresponding to one measurement parameter, and a plurality of LSB data are continuously formed in the LSB file in the order of the code numbers. The formula number is a number for specifying a conversion formula separately stored in the hard disk drive 17 for calculating a physical value from an actual value of a measurement parameter, and the physical conversion parameters f ₀ , f ₁ ,. And the like used in

After executing step S6, the CPU 11 of the control circuit 1 returns to step S2. If the function key f · 9 has not been operated in step S2, it is determined whether or not the function key f · 1 corresponding to “setting” has been operated (step S7). When the function key f.1 is operated, a channel setting operation is performed (step S8). That is, in the channel setting, one frame of a plurality of channel display frames shown on the screen of the display 19 as a monitor image is a thick line frame, which becomes the current cursor position, and which is operated by operating the arrow keys. The cursor position is movable. After moving the cursor position to the desired channel display frame with the arrow keys and operating the enter key, the label names included in the selected RAM address file are continuously displayed in a window, and the desired label names are cursored with the arrow keys. After moving the position, the selection is determined by operating the enter key. By doing so, the correspondence between the channel number and the parameter to be measured is determined, and a reception channel storage area indicating the correspondence is formed in the RAM 12. This channel setting operation can be repeated for an arbitrary number of channels. By performing the channel setting operation in this way, for example, a reception channel storage area as shown in FIG. 10 is formed.

Each time the channel setting operation is performed, the CPU 11 determines whether or not the ESC key has been operated (step S9). If the ESC key is not operated,
Further, step S8 is repeated to perform a channel setting operation. On the other hand, if the ESC key is operated, the control circuit 1 determines the correspondence between each channel number stored in the channel storage area and the address of the RAM in the ECU 3 by D.
Writing to the P-RAM 25 (step S10). DP-
For example, a data storage area is formed in the RAM 25 as shown in FIG. When the control circuit 1 finishes writing the correspondence in the DP-RAM 25, it issues an interrupt signal indicating a start command for starting data communication (step S11). This interrupt signal is sent to the DP-RAM 25
Is written as data.

On the other hand, the CPU 21 of the monitor circuit 4
As shown in FIG. 2, the DP-RAM 25
It is determined whether or not a start command interrupt signal has been written therein (step S51). If the interrupt signal of the start command is written, the CPU 21
Start serial communication with U3. That is, CPU
21 sets the channel number n to 1 (step S5).
2) From the data table of the DP-RAM 25,
An address corresponding to the channel n-ch is read (step S53), and a serial signal of a data request for the read address is transmitted via the input / output circuit 24 (step S54).

When a serial signal is supplied from the monitor circuit 4 to the serial communication input / output circuit 54, the CPU 51 of the ECU 3 reads the address indicated by the serial signal, and stores the read address in the RAM 53 at the storage position designated by the read address. The stored data value is read and supplied to the serial communication input / output circuit 54. As described above, the value stored in the storage location specified by the address is a value detected by a sensor or a calculated value such as a fuel injection amount.
Serial communication input / output circuit 54 transmits the data value as a serial signal indicating the data value.

The CPU 21 of the monitor circuit 4 executes step S
54, the serial communication input / output circuit 54 of the ECU 3
To determine whether a serial signal has been supplied from the
Step S55). If the serial signal is supplied
If the value indicated by the serial signal is read, DP-RA
In the storage location corresponding to the channel number n-ch of M25
Write (step S56). The CPU 21 further switches
One is added to the channel number n (step S57), and
New channel number n is maximum channel number n
_max(E.g., 48)
(Step S58). n ≦ n_maxStep S if
Returning to step 53, the above operation is performed for the next channel number.
repeat. n> n_maxReturns to step S52 in the case of
The above operation is repeated for the first channel 1-ch
You.

By performing such a serial communication operation, the DP-RAM 25 stores a RAM for each channel.
The data value (hexadecimal data) read from 53 will be written in the reading order. Note that DP-RAM2
The write position 5 is incremented by a counter (not shown) for each channel, and when reaching the last writable storage position, the counter is reset and the next write position returns to the first storage position. I have.

When such a serial communication operation is started, the CPU 21 of the monitor circuit 4 generates an interrupt signal at a predetermined timing (for example, every 100 msec). Since this interrupt signal is written to a predetermined storage location of the DP-RAM 25, it is transmitted to the CPU 11 of the control circuit 1. Therefore, as shown in FIG. 13, the CPU 11 sets the function key f ·
It is determined whether or not 6 has been operated (step S21).
When the function key f.6 is operated, the mode becomes the data storage mode, and the time data at the time when the operation of the function key f.6 is detected is obtained from the time counter (not shown) held in the control circuit 1 itself. The data is read and written into the header of the received data storage area (step S2).
2). This time data indicates the data recording start time. C
The PU 11 reads the measurement data of each channel of the DP-RAM 25 in response to the interrupt signal at a predetermined timing (Step S23), and writes the read measurement data to the storage position of the reception data storage area of the RAM 12 in association with the channel. (Step S24), the data counter provided at the head of the storage position of the written reception data storage area is incremented by one (Step S25).
Since this data reading operation is performed via the external bus 16, it is extremely faster than the data transmission speed of the serial communication. Therefore, one data of each channel already written in the DP-RAM 25 is read to store the received data. Written to the area. The data counter indicates the number of read data common to all channels. In the DP-RAM 25, the storage position of the data read by the CPU 11 is marked for each channel by a counter (not shown) so that new data can be written. In addition,
The reception data storage area is, for example, as shown in FIG.

When the CPU 11 finishes writing data in the reception data storage area, the CPU 11 determines whether the function key f.7 corresponding to "stop" has been operated (step S26). If the function key f.7 is not operated, the CPU waits for the next interrupt signal from the CPU 21 of the monitor circuit 4. On the other hand, if the function key f.7 is operated, an interrupt signal indicating a stop command for stopping data communication is issued (step S27). Since the capacity of the reception data storage area of the RAM 12 is limited, an interrupt signal indicating a stop command is also generated when the final storage position is reached.

The interrupt signal indicating this stop command is DP-
The data is written in the RAM 25 as data. Therefore, as shown in FIG. 15, the CPU 21 of the monitor circuit 4 determines whether or not a stop command interrupt signal is written in the DP-RAM 25 at a predetermined timing (step S6).
1). If a stop command interrupt is written, CP
U21 controls the input / output circuit 24 to control the monitor circuit 4 and the EC.
The serial communication with U3 is stopped (step S6).
2).

As described above, all the measured data from the start of measurement to the end of measurement are written in the DP-RAM 25. The CPU 1 of the control circuit 1 performs data analysis using the measurement data written in the DP-RAM 25 as follows. As shown in FIG. 16, the CPU 1 first reads the measurement data for each channel (step S71). That is, the measurement data of each channel is read out from the data table of the DP-RAM 25 in the measurement order, and written to the measurement data storage area (not shown) in the RAM 12 for each channel.

Next, the CPU 1 sets a parameter to be analyzed among the read measurement data as a trigger channel, sets the extraction start time of the parameter as a trigger search type, and further sets a trigger threshold (step S72). ). Here, as an example, it is assumed that the trigger channel is set to the throttle opening TH, the trigger search type is set to rising, and the trigger threshold is set to 10 degrees. These analysis condition settings are performed by key operations from the keyboard 20. After the execution of step S72, measurement data for the throttle opening TH with a trigger threshold of 10 degrees or more is extracted from the measurement data storage area and stored (step S73). The extracted measurement data may be written in another storage area, or a mark indicating whether or not the data in the measurement data storage area is 10 degrees or more may be added. The extracted throttle opening TH is supplied to the display control circuit 18 and displayed on the display 19.

Next, the CPU 1 sets a data calculation channel, sets calculation position determination conditions, and sets a calculation position determination time range (step S74). Here, as an example, it is assumed that the data calculation channel is set to the engine torque TQ, the calculation position determination condition is set to the maximum value, and the calculation position determination time range is set from 0.5 sec before the trigger position to 2 sec after the trigger position. These analysis condition settings are also performed by key operations from the keyboard 20.

The CPU 1 calculates the torque TQ by extracting the measured data of the throttle opening TH in the calculated position determination time range from the measured data storage area based on the analysis conditions set in step S74 (step 75). The maximum value position is determined (step 76). Torque T
After obtaining the position of the maximum value of Q, a data calculation condition is set, and a data calculation calculation time range is set (step S77).
Here, as an example, it is assumed that the data calculation condition is set to the minimum value and the data calculation calculation time range is set to the calculation position, that is, the range of 1 sec before the maximum value position. These settings are also performed by key operations from the keyboard 20. Then, the minimum value within the set range time around the maximum value position is calculated (step S78).

FIG. 17 shows a characteristic of the measured data of the throttle opening TH and an example of a characteristic of the torque TQ calculated based on the measured data, and also shows a calculation position determination time range and a data calculation calculation time range. As described above, the throttle opening TH as the measurement data is read into the measurement data storage area as data smaller than 10 degrees.
The change characteristic of the throttle opening degree of 0 degree or more and the minimum value of the torque TQ using the measurement data in the range smaller than 10 degrees concerning the change characteristic can be calculated based on one measurement data.

As the trigger search type, specific changes such as rising, falling, in-range inrush, out-of-range departure, digital value bit change, and the like can be set. A maximum value, a minimum value, and the like can be set. As data calculation conditions, an immediate value, a maximum value, a maximum value time, a minimum value, a minimum value time, an average value, and the like can be set.

In the above-described embodiment, the case where the throttle opening is used as the measurement data has been described. However, other engine parameters such as the engine speed, the intake pipe pressure, and the control parameters such as the fuel injection amount are measured. Data may be used.

[0031]

As described above, according to the present invention, detection or control parameter data is unconditionally measured and stored, analysis conditions for the stored measurement data are set, and setting is made from the stored measurement data. Since the data that satisfies the analysis conditions extracted is analyzed, if you want to analyze the data with the same parameters under other analysis conditions, you do not need to make new measurement settings corresponding to the analysis conditions on the measuring instrument.
Data analysis can be performed immediately. Therefore, there is an advantage that the entire time required for data analysis including data measurement is reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a schematic configuration of a control circuit.

FIG. 3 is a block diagram illustrating a configuration of an interface circuit.

FIG. 4 is a block diagram illustrating a configuration of an ECU.

FIG. 5 is a flowchart showing the operation of the CPU of the control circuit.

FIG. 6 is a monitor image display example.

FIG. 7 is a diagram partially showing details of the monitor image display of FIG. 6;

FIG. 8 is a diagram showing a structure of a RAM address file.

FIG. 9 is a diagram showing the structure of an LSB file.

FIG. 10 is a diagram showing a data table of a reception channel storage area.

FIG. 11 is a diagram showing a data table of a data storage area.

FIG. 12 is a flowchart showing the operation of the CPU of the monitor circuit.

FIG. 13 is a flowchart showing the operation of the CPU of the control circuit.

FIG. 14 is a diagram showing a data table of a reception data recording area.

FIG. 15 is a flowchart showing an operation of the CPU of the monitor circuit.

FIG. 16 is a flowchart showing the operation of the CPU of the control circuit.

FIG. 17 is a diagram showing characteristics of a throttle opening and a torque.

[Description of Signs of Main Parts]

 DESCRIPTION OF SYMBOLS 1 Control circuit 2 Interface circuit 3 ECU 4 Monitor circuit 5 Analog circuit 6 Bus connection circuit

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[Procedure amendment]

[Submission date] June 4, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

SUMMARY OF THE INVENTION A data analysis device according to the present invention is a data analysis device for analyzing data of detection or control parameters obtained during control in an electronic control device for controlling an internal combustion engine mounted on a vehicle. Measuring means for unconditionally measuring and storing detection or control parameter data; first condition setting means for setting analysis conditions relating to the measurement data stored in the measuring means; and measurement data stored in the measuring means. Extracting the data satisfying the analysis condition set by the first condition setting means from the
And detemir stage, the measurement data extracted by the first extracting means
Operating state of the internal combustion engine based on the measurement data
Calculating means for obtaining a parameter indicating
Second condition setting procedure for setting extraction conditions for calculated data
And the second condition setting means from the calculation data
Second extraction for extracting data that satisfies the set extraction conditions
And a delivery means .

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction contents]

[0031]

As described above, according to the present invention, detection or control parameter data is unconditionally measured and stored, analysis conditions for the stored measurement data are set , and
Of extracting data that satisfies one or et analysis conditions of the measurement data, for each extracted measurement data based on the measurement data
Parameters that indicate the operating state of the internal combustion engine
Data and set extraction conditions for the calculated data
And, from the calculated data, data that satisfies the extraction conditions
Extraction is performed. Therefore, in data analysis
Since the conditions are set individually for each parameter to be used for analysis, the same detection or control parameter measurement data
If you want to complex data analysis to calculate the other parameters in different conditions, without newly performing measurement configuration corresponding to the analysis conditions Instrument, the entire required for data analysis including a data measurement time there is advantage that <br/> and can be shortened.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Katsuhiko Suzuki, Inventor 1-4-1 Chuo, Wako-shi, Saitama Prefecture Honda R & D Co., Ltd. (72) Takatoshi Ota 1-4-1 Chuo, Wako-shi, Saitama Company Honda R & D Center

Claims (2)

[Claims] 1. A data analysis device for analyzing data of a detection or control parameter obtained during control in an electronic control device for controlling an internal combustion engine mounted on a vehicle, wherein the data of the detection or control parameter is unconditionally Measuring means for measuring and accumulating the measurement data, condition setting means for setting analysis conditions relating to the measurement data accumulated in the measuring means, and setting by the condition setting means from among the measurement data accumulated in the measuring means. A data analysis device, comprising: extraction analysis means for extracting and analyzing data satisfying an analysis condition. 2. The condition setting means sets a plurality of mutually different analysis conditions, and the extraction analysis means obtains, for each of the plurality of mutually different analysis conditions, data satisfying the analysis conditions from measurement data by the measurement means. 2. The data analysis device according to claim 1, wherein the data analysis device extracts the data.