JPH09303195A - Data updating device for electronic control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily update a data relating to a plurality of fixed actual data used during control relating to a controlled machine, by using a value received by an input means and a value calculated by a calculating means, updated and displayed in a position corresponding to in a data table. SOLUTION: A control circuit 1 and a read only memory(ROM) writer 2 are provided. An on-vehicle internal combustion engine controlling electronic control unit(ECU) 4 can be connected to the control circuit 1 through a monitor device 3. Of a plurality of fixed actual data, at least one value of the fixed actual data and a physical value corresponding thereto are displayed as a data table. In the case that a value received by an input means is the fixed actual data, its physical value is calculated, in the case that the received value is the physical value, its actual data value is calculated. The received value and the calculated value are used, to be updated and displayed in a position corresponding to in the data table. In this way, these data can be easily updated.

Description

Detailed Description of the Invention

The present invention relates to a data updating device for updating desired data out of a plurality of fixed actual data used during control in an electronic control device such as an on-vehicle electronic fuel injection device.

[0002]

2. Description of the Related Art As an electronic control unit, there is a vehicle internal combustion engine for controlling its operating state to an optimum state. For example, in an internal combustion engine which supplies fuel by injection, it should be supplied. 2. Description of the Related Art There is a well-known electronic fuel injection device which detects a fuel amount by a sensor of a driving state of a vehicle and an engine and calculates and controls the fuel amount according to a sensor detection value.

A control operation state of such an electronic control unit,
For example, tests are conducted by actually mounting an electronic control unit on a vehicle and operating an engine or running the vehicle in order to determine whether or not a sensor or a control unit main body is operating normally. . In the test, each sensor output value or calculated value was sampled as data from the electronic control unit and stored as a data group in the memory, and then the stored data was analyzed. Also, based on the results obtained by the analysis, the user such as the tester sets the fixed reference data such as the comparison reference value used during the control in the electronic control device and the multiplication coefficient when calculating the control amount to the optimum value. The data to be reset is updated.

[0004]

However, since the values of the fixed actual data are control values, for example, hexadecimal values, they represent physical quantities such as temperature and engine speed unless converted by some conversion formula. It is a value that cannot be obtained as a physical value. Therefore, the user separately calculates the fixed actual data currently set using a computer etc. and knows the actual physical value, and after determining a new physical value based on that, the fixed actual data is then used. There is a problem in that it is inconvenient and it is difficult to update data efficiently because the data must be converted and calculated to update the data.

Therefore, an object of the present invention is to provide a data updating device for an electronic control device, which can facilitate data updating for a plurality of fixed actual data used during control of a controlled device in the electronic control device. That is.

[0006]

A data updating device for an electronic control device according to the present invention has a storage means for storing a plurality of fixed actual data used during control of a controlled device in the electronic control device. At least one fixed real data value out of the plurality of fixed real data and the corresponding physical value are displayed as a data table, and a new value in place of the displayed fixed real data value is accepted to store in the storage means. Is a data updating device for updating the fixed real data, the input means accepting a value for changing the data in the data table, and the physical value is calculated when the value accepted by the input means is a fixed real data value. Calculating means for calculating the actual data value when the value received by the input means is a physical value, and the value received by the input means and calculated by the calculating means It is characterized in that comprising a display control means for updating the display at the corresponding position in the data table by using the value.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. The data updating device of the vehicle electronic control device shown in FIG. 1 includes a control circuit 1 and a ROM (read only memory) writer 2. 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, a CPU (central processing unit) 11, a RAM (random access memory) 12 and a ROM 13 are connected to an internal bus 14, and the internal bus 14 is externally connected via a chip set 15 for timing control. It is connected to the bus 16. A hard disk drive 17 and a display control circuit 18 are connected to the external bus 16, and the display control circuit 18 is a CP.
The display control of the display 19 is performed according to the instruction from U11. A keyboard 20 is connected to the internal bus 14 via an operation control circuit 20a. The keyboard 20 is provided with at least a function key, an enter key, an arrow key, an ESC (escape) key, an alphabetic character key, a space key, and a numeric keypad (both not shown).

Further, in this data updating device, an ECU (electronic control unit) 4 for controlling an on-vehicle internal combustion engine can be connected to the control circuit 1 via a monitor device 3. The monitor device 3 obtains the operation data of the ECU 4, for example, the output value of each sensor, the control value such as the fuel injection amount, and supplies the control data to the control circuit 1. The user mounts the ECU 4 on a vehicle to perform a test, obtains operation data, analyzes the data, and uses the data updating device according to the result of the data analysis to multiply the program coefficient of the ECU 4 and the comparison reference value. Or the like, or the data map of the basic fuel injection amount or the like is updated. Each of these data is HEX (hexadecimal number) data, and all the HEX data is stored in the ECU 4 as one HEX file.

The ECU 4 is, for example, C as shown in FIG.
At least a PU 51, 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 are provided.
They are connected to each other by a common bus. ROM 52
The above-mentioned H that can be updated by this data updating device is
An EX file is stored in advance. 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. As the sensor, 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 as the controlled device, an intake air that generates a voltage according to the absolute pressure in the intake pipe of the internal combustion engine Pipe pressure sensor,
There are various sensors such as a crank angle sensor that generates a pulse signal according to the rotation speed of a crankshaft of an internal combustion engine, a cooling water temperature sensor that detects a temperature of cooling water of the internal combustion engine, and the like.

The CPU 51 of the ECU 4 operates according to a program stored in advance in the ROM 52, reads the output values of the plurality of sensors through the sensor input interface circuit 55, stores them in the RAM 53, and the actuators according to the output values of the sensors. To generate a signal for driving the drive circuit and supply it to the drive circuit 56. For example, when driving the injector, the basic fuel injection amount is calculated from the absolute intake pipe internal 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 the air-fuel ratio information obtained from the output value of the oxygen concentration sensor, the engine temperature information obtained from the cooling water temperature sensor, etc., and the injector is driven according to the fuel injection amount.

In the above data updating device, the hard disk drive 17 has a plurality of HEX files and DBs.
An F file, an LSB file, and a plurality of lock files are stored. Since the HEX file of the ECU 4, that is, each HEX data is different for each vehicle type, the hard disk drive 17 is provided with a plurality of HEX files so that the connected ECU 4 can be used for any vehicle type. Further, as shown in FIG. 4, the HEX file has 1-byte or 2-byte HEX data arranged in the order of addresses (column portion of “BC00” in FIG. 4). D
The BF file has a structure as shown in FIG. That is, a code number assigned in advance for each HEX data,
The label name, description, address, data size, LSB code, settable maximum value (MAX), and settable minimum value (MIN) of HEX data are repeated in this structure for each type of HEX data, and a DBF file is created. It is formed.

The LSB file has a file structure as shown in FIG. That is, the part consisting of the LSB code number, label name, physical quantity unit, formula number, data size, physical conversion parameters f0, f1 ... Is 1
LSB data corresponding to one measurement parameter, L
In the SB file, a plurality of LSB data are continuously formed in the order of code numbers. The formula number is a number for specifying a conversion formula separately stored in the hard disk drive 17 in order to calculate the physical value from the actual value of the measurement parameter, and the physical conversion parameters f0, f1 ... Are used in the conversion formula. Such as a coefficient.

The lock file is a file created for each HEX file as will be described later, and has a structure having at least a label name, data size, lock data, lock / unlock, and comment for each label name as shown in FIG. Has become. HE that lock data cannot be changed
It is X data, and lock / unlock indicates the type of unchangeable / changeable, to easily set changeable when one lock data is set as unchangeable and the lock data becomes unnecessary. It is provided in.

In the data updating operation, the CPU 11 of the control circuit 1 first prepares a plurality of HEX files containing HEX data containing HEX data to be updated as shown in FIGS.
It is determined from the files (step S1). This is possible by the user inputting a desired HEX file name by operating the keyboard 20 and the CPU 11 acquiring the input HEX file name. Alternatively, all the HEX file names stored in the hard disk drive 17 are displayed on the display 19 by the display control circuit 18, and the user selects one of the displayed HEX file names by operating the keyboard 20. This can be done by the CPU 11 detecting the fact.

Next, the determined HEX file and DBF
The file and the LSB file are read from the hard disk drive 17 (step S2). By reading the HEX file, the DBF file, and the LSB file, these files are expanded in the RAM 12. Then, as shown in FIG. 11, the label, the description, the address, the maximum settable value (MAX), the minimum settable value (MIN), and the LS.
A data table having B, HEX data, and physical values as display items is displayed on the display 19 via the display control circuit 18 (step S3), and the contents of the read DBF file, that is, label name for each label name, description , Address, LSB code, settable maximum value and settable minimum value are displayed by the display control circuit 18 in the displayed data table (step S4). CPU11 is step S4
After executing, it is determined whether the lock file corresponding to the determined HEX file is stored in the hard disk drive 17 (step S5), and if there is the lock file corresponding to the determined HEX file, the lock file flag F1 Is set to 1 (step S6), and the lock file is read from the hard disk drive 17 (step S7). On the other hand, if there is no corresponding lock file, the lock file flag F1 is set to 0 (step S8).

After executing step S7 or S8, the CPU 11 sets the variable n to 1 (step S9) and determines whether the lock file flag F1 is 1 (step S).
10). If F1 = 1, since the lock file corresponding to the determined HEX file already exists, the label name corresponding to the code number n is extracted from the read DBF file (step S11), and the same label name as that label name is obtained. It is determined whether or not it exists in the lock file read in step S7 (step S12). If there is an item having the same label name, it is determined whether or not the lock / unlock item corresponding to the label name in the lock file is 1 indicating that the lock cannot be changed (step S13). If the lock / unlock item indicates that the change is impossible, the change impossible flag F2 _n (n is the above variable) is set to 1 (step S14), and the variable n is set in the data table being displayed on the display 19. The data rows in the designated order are highlighted (step S15).
The display color of the row may be changed to a specific color (for example, white display → green display) instead of the reverse display. When it is determined in step S12 that there is no item having the same label name, or when it is determined in step S13 that the lock / unlock item is 0 indicating changeable, the unchangeable flag F2 _{n is set} to 0. Set (Step S
16).

The CPU 11 further extracts the address corresponding to the code number n from the DBF file read in step S2 (step S17), and the read HEX.
H at the data position specified by the address from the file
EX data is taken out (step S18). In addition, the LS corresponding to the code number n from the read DBF file
The B code is taken out (step S19) and step S2
The physical quantity unit, conversion formula number, and physical conversion parameter corresponding to the LSB code are retrieved from the LSB file read in step S20. Then, the conversion formula designated by the conversion formula number is read from the hard disk drive 17 (step S21), and the HEX data obtained in step S18 and the physical conversion parameter obtained in step S20 are applied to the read conversion formula to obtain physical values. Calculate (step S22). The calculated physical value is displayed in the data table being displayed together with the HEX data and the physical quantity unit obtained in step S20 (step S23).

After execution of step S23, 1 is added to the variable n (step S24), and it is determined whether the code number n exists in the DBF file (step S25). That is, if there is data with the code number n in the DBF file, the process returns to step S10 and the above operation is repeated. DB in step S25
If the data with the code number n does not exist in the F file, it means that each HEX data of the HEX file determined in step S1 and its physical value have been displayed in the data table on the display 19. Therefore, CPU1
1 then allows the user to change the HEX data or physical values. That is, first, it is determined whether or not the label name of the data to be changed is accepted (step S3).
0). This displays a cursor (for example, "■") that moves in line units in response to the user's operation of the arrow keys on the data table, and the line where the cursor is located when the user operates the space key. The label name can be determined from the number. Alternatively, the user may input the label name from the keyboard 20 and acquire the label name. The label name judged is read (step S3
1), it is determined whether or not the unchangeable flag F2 _m corresponding to the label name is 1 (step S32). Here, m is a variable and is the code number in the DBF file of the determined label name. If F2 _m = 1, an alarm indicating that data change is prohibited is generated (step S33), and then the process proceeds to step S34. Such an alarm may be displayed on the screen of the display 19 or an alarm sound may be generated by a buzzer or the like. By issuing an alarm in this way, careless updating of data is prevented. If F2 _m = 0, the next step S
Proceed to 34.

Next, in step S34, it is determined whether the data changed by the user is HEX data or a physical value. This can be determined by whether or not the cursor is in each display frame of the HEX data and the physical value on the data table. Alternatively, the user can input which of the HEX data and the physical value is to be changed from the keyboard 20 and judge from the input information.

If the result of determination in step S34 is that the HEX data has been changed, the data value is accepted from the keyboard 20 (step S35). L corresponding to the code number specified by the variable m from the read DBF file
The SB code is extracted (step S36), and the LS specified by the LSB code is read from the read LSB file.
The physical quantity unit of B data, the conversion formula number, and the physical conversion parameter are taken out (step S37). The conversion formula designated by the conversion formula number is read from the hard disk drive 17 (step S38), and the read conversion formula is converted into step S.
A physical value is calculated by applying the HEX data obtained in step 35 and the physical conversion parameter obtained in step S37 (step S39). The calculated physical value is displayed at each display position of the row of the label name read in step S31 in the data table being displayed together with the HEX data and the physical quantity unit obtained in step S37 (step S40).

Note that the HEX data and the physical value thereof are not simultaneously displayed as in step S40, but the HEX data input from the keyboard 20 is first displayed, and then the physical value is calculated and displayed. good. If the determination result of step S34 is that the physical value is changed, the physical value is accepted from the keyboard 20 (step S41). The LSB code corresponding to the code number designated by the variable m is extracted from the read DBF file (step S4).
2) The physical quantity unit, conversion formula number, and physical conversion parameter of the LSB data specified by the LSB code are extracted from the read LSB file (step S43).
The conversion formula designated by the conversion formula number is read from the hard disk drive 17 (step S44), and the physical value obtained in step S41 and step S43 are added to the read conversion formula.
The HEX data is calculated as a value by applying the physical conversion parameter obtained in (step S45). The calculated HEX data is displayed at each display position of the row of the label name read in step S31 in the data table being displayed together with the physical value and the physical quantity unit obtained in step S43 (step S4).
6).

It should be noted that, instead of displaying the HEX data and its physical value at the same time as in step S46, the physical value input from the keyboard 20 is first displayed and then the HE
The X data value may be calculated and displayed. After executing step S40 or S46, the CPU 11 takes out the address corresponding to the code number m from the DBF file (step S47), and sets the data position designated by the address in the HEX file loaded in the RAM 12 to step S3.
HEX data obtained in step 5 or H calculated in step S45
The EX data is written to update the data (step S4
8). When the data is updated in this way, it is determined whether or not all data changes have been completed (step S49). For example, when the user operates the key indicating the end from the keyboard 20, the HEX file on the RAM 12 is overwritten and saved in the hard disk drive 17 as the end of the data change (step S50). On the other hand, if there is any other key operation, the process returns to step S30 and the above data changing operation is repeated.

In the above embodiment, step S35.
HEX data obtained in step S4 or HE calculated in step S45
Although the X data is directly accepted as appropriate data, whether or not the HEX data is a value between the minimum settable value (MIN) and the maximum settable value (MAX) set for each label name. If MIN ≦ HEX data ≦ MAX, the data can be changed, and if HEX data <MIN or HEX data> MAX, an alarm is issued and the re-input of the HEX data or the physical value is requested. good.

Further, in the above-described embodiment, even with respect to the HEX data whose data is prohibited to be changed by the lock file, the data can be actually changed only by issuing an alarm, but the data cannot be changed at all. May be. In this case, after an alarm indicating that the data change is prohibited is issued in step S33, the input of another label name is requested and the process returns to step S30.

Further, in the above-described embodiment, if it is determined in step S30 that the label name of the data to be changed is not accepted, step S49 is executed, and thus it is determined in step S49 that the data change has ended. If so, the HEX file may be overwritten as it is without changing the data. However,
In this case, it is obvious that this operation routine may be terminated without overwriting.

Further, by the above data update operation, the HEX
After the data of the file is changed and stored in the hard disk drive 17, the HEX file can be written by the ROM writer 2 to the ROM (not shown) set therein. The data of the new HEX file is R
If written to OM, change the ROM to the above ROM
By newly setting 52 in the ECU 4, E
In CU4, the electronic control operation reflecting the data change can be obtained.

Further, in the above embodiment, HEX
The case where the data such as the comparison reference value and the coefficient in the file is changed has been described, but the data map such as the basic fuel injection amount TI with the engine speed NE and the intake pipe absolute pressure PB as parameters as shown in FIG. The data map can be displayed on the display 19 and can be similarly changed. In FIG. 12, the basic fuel injection amount TI
The upper part of each part (each part divided into upper and lower parts by a broken line) showing the value of is HEX data, and the lower part is a physical value.

Further, the HEX data and the physical values may be displayed as a two-dimensional graph or a three-dimensional graph instead of being displayed as a data table. Next, the lock file creation operation will be described. In the lock file creation operation, the CPU 11 of the control circuit 1 makes the data unchangeable or the data changeable HEX as shown in FIGS. 13 to 15.
A HEX file containing data is determined from a plurality of HEX files (step S61). This is step S
As in the case of 1, the user can input a desired HEX file name by operating the keyboard 20, and the CPU 11 can obtain the input HEX file name. Alternatively, all the HEX file names stored in the hard disk drive 17 are displayed on the display 19 by the display control circuit 18, and all the displayed HEs are displayed.
This can be performed by the CPU 11 detecting that the user has selected one of the X file names by operating the keyboard 20.

Next, step S62 after step S61.
To S85 are steps S2 to S of the data update operation described above.
It is the same as 25. Therefore, the description here is omitted.
In step S85, the code number n is added to the DBF file.
If there is no data marked with, step S61
Having finished displaying each HEX data of the HEX file and the physical value thereof determined in step 1 in the data table on the display 19, the CPU 11 determines whether or not the label name of the data to be unchangeable / changeable is accepted. It is determined (step S90). This displays a cursor that moves in rows on the data table according to the user's operation of arrow keys,
When the user operates the space key, the label name can be determined from the number of the line on which the cursor is located. Alternatively, the user can enter the label name into the keyboard 20.
You may input from and acquire the label name. After the execution of step S90, the discriminated label name is read (step S91), and the HEX corresponding to the label name is read.
It is determined whether or not to prohibit changing the data (or physical value) with the current value (step S92). This is because the line on the data display corresponding to the read label name is switched between non-inverted display and inverted display by operating the space key, so it is highlighted by operating the space key. It can be determined whether or not there is. As a result, if it is determined that the change is prohibited, 1 indicating that the data cannot be changed is set in the change impossible flag F2 _m (step S93), and if it is determined that the change is possible, 0 indicating that the change is possible is the unchangeable flag. It is set to F2 _m (step S94). Here, m is a variable, and step S
It is the code number in the DBF file of the label name determined in 91.

Then, it is determined whether or not the lock file flag F1 is 1 (step S95). If F1 = 1, a lock file corresponding to the determined HEX file exists and is expanded on the RAM 12, so the label name, data size (obtained from the DBF file), HEX data as lock data, lock / unlock Then, the data including the unchangeable flag F2 _{m and the} like is added to the lock file (step S96). Step S
In 96, if data for the same label name already exists, it is overwritten. On the other hand, if F1 = 0,
Since the lock file corresponding to the determined HEX file does not exist, data including a label name, data size, HEX data as lock data, unchangeable flag F2 _m as lock / unlock, etc. in the file structure of the lock file on the RAM 12. A write lock file is formed (step S97).

When the data in the lock file is updated or a new lock file is created in this way, the CPU 1
1 determines whether or not further data change is necessary for the lock file (step S98). For example, when the user operates the key indicating the end from the keyboard 20, it is determined that there is no further data change, and the lock file in the RAM 12 is overwritten or newly saved in the hard disk drive 17 (step S9).
9). On the other hand, if there is any other key operation, step S9.
Returning to 0, the above-mentioned lock file creating operation is repeated.

The data update operation and the lock file creation operation can be switched by operating the keyboard 20 with a key.

[0033]

In the data updating device for the electronic control device of the present invention, the value of at least one fixed real data of the plurality of fixed real data used during the control of the controlled device in the electronic control device and the value thereof Displays the corresponding physical value as a data table, calculates the physical value when the value received by the input means is a fixed actual data value, and calculates the actual data value when the value received by the input means is a physical value Then, the new fixed actual data value thus obtained and its physical value are updated and displayed at the corresponding positions in the data table. Since physical values that can be easily understood by operators such as testers can be obtained, efficient data updating is possible.

[Brief description of drawings]

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

2 is a block diagram showing a configuration of a control circuit in the apparatus of FIG.

3 is a block diagram showing a configuration of an ECU in the device of FIG.

FIG. 4 is a diagram showing a structure of a HEX file.

FIG. 5 is a diagram showing a structure of a DBF file.

FIG. 6 is a diagram showing a structure of an LSB file.

FIG. 7 is a diagram showing a structure of a lock file.

FIG. 8 is a flowchart showing a data update operation by a CPU in the control circuit.

9 is a flowchart showing a continuation part of the data update operation of FIG.

10 is a flowchart showing a continuation part of the data update operation of FIG.

FIG. 11 is a diagram showing an example of a data table displayed on a display.

FIG. 12 is a diagram showing another example of a data table displayed on the display.

FIG. 13 is a flowchart showing a lock file creation operation by the CPU in the control circuit.

FIG. 14 is a flowchart showing a continued part of the lock file creating operation shown in FIG. 13;

FIG. 15 is a flowchart showing a continued part of the lock file creating operation shown in FIG. 14;

[Explanation of symbols for main parts]

 1 control circuit 2 ROM writer 3 monitor device 4 ECU

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadashi Umeda 1-4-1 Chuo, Wako-shi, Saitama Honda R & D Co., Ltd. (72) Inventor Takatoshi Ota 1-4-1 Chuo, Wako-shi, Saitama Inside Honda R & D Co., Ltd.

Claims (5)

[Claims] 1. An electronic control device comprising a storage means for storing a plurality of fixed actual data used during control of a controlled device, and a value of at least one fixed actual data of the plurality of fixed actual data. A data update device for displaying the physical values corresponding thereto as a data table, and updating the stored fixed actual data in the storage means by accepting a new value in place of the displayed fixed actual data value, Input means for accepting a value to be changed in the data table, and calculating a physical value when the value accepted by the input means is a fixed actual data value, and when the value accepted by the input means is a physical value The calculation means for calculating the actual data value, the value received by the input means, and the value calculated by the calculation means are used to calculate the actual data value in the data table. A data updating device for an electronic control device, comprising: display control means for updating and displaying at a corresponding position. 2. The electronic control device according to claim 1, further comprising update means for updating and storing the fixed real data in the storage means by the fixed real data updated and displayed by the display control means. Data update device. 3. The calculation means reads fixed real data from the storage means and converts the read fixed real data value into a physical value, and the display control means reads the fixed real data value by the calculation means. The data updating device for an electronic control device according to claim 1, wherein the data value and the physical value converted by the calculating means are displayed in the data table. 4. The data updating device for an electronic control device according to claim 1, further comprising: a unit that warns or prohibits updating of desired fixed actual data among the plurality of fixed actual data. 5. The ROM (read only memory) to be set in the electronic control device, the plurality of fixed actual data in the storage means updated and stored by the updating means.
The data updating device for an electronic control device according to claim 2, wherein the data updating device is written in the ROM writer.