JP3324933B2 - Vehicle failure diagnosis device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular failure that enables a menu to be displayed on a display in a hierarchical structure, and finally specifies a desired function by selecting items in order from an upper hierarchical menu to a lower hierarchical menu. It relates to a diagnostic device.

[0002]

2. Description of the Related Art Recently, a control system of a vehicle such as an automobile is complicatedly electronically controlled, and a failure diagnosis device which can easily read data from an electronic control system mounted on the vehicle when performing a failure diagnosis. Is indispensable.

[0003] As this kind of failure diagnosis device, for example,
There is a portable failure diagnosis device that emphasizes versatility disclosed in Japanese Patent Publication No. 7-76737 by the present applicant.
Connect the fault diagnosis device to the electronic control system mounted on the vehicle,
A diagnosis item is designated by a simple key operation from the keyboard of the failure diagnosis device, and data corresponding to the diagnosis item is read out from the on-vehicle electronic control system by two-way communication and displayed on the display of the failure diagnosis device. By checking the data, the operator can easily check the control system of the vehicle.

That is, input data in an electronic control system as detection signals from sensors and switches,
The operator compares the output data corresponding to the control amount for the actuators such as the injectors or the self-diagnosis data in the electronic control system and these data values displayed on the display with a normal value, and compares the data value with a normal value. Investigate the cause and make necessary repairs or adjustments.

By the way, in the above-described conventional fault diagnosis apparatus, when reading necessary data from an electronic control system mounted on a vehicle, a data request code is input to the fault diagnosis apparatus by operating a keyboard. The failure diagnosis device requests the vehicle-mounted electronic control system to transmit necessary data.

However, inexperienced workers must input a transmission request code corresponding to data read from the on-vehicle electronic control system into the failure diagnosis device while referring to a manual. Then, a relatively large-sized display is provided in the failure diagnosis device, and menus are displayed on the display in a hierarchical structure, and the operator selects the processing items in the menu by key input or the like while selecting the menu from the upper hierarchy. Open sequentially to lower levels,
A failure diagnosis device has been developed which can make a data transmission request to the electronic control system simply by specifying a function desired by an operator.

According to this failure diagnosis apparatus, the operator can execute desired functions and read data without successively referring to the manual, so that even a worker who is unfamiliar with the operation can use the failure diagnosis apparatus. Can be easily used.

[0008]

However, there are functions that are used relatively frequently depending on the contents of the failure diagnosis.
For example, when the on-vehicle electronic control system is an electronic control system for engine control, monitoring of data such as engine speed, vehicle speed, and cooling water temperature is a frequently used function,
When reading such data, the menu must be displayed on the display in order from the initial state to the lowest level, and the operation of selecting each processing item in the menu one by one as the user becomes accustomed to using the fault diagnosis device. It gets annoying.

To cope with this, for a function that is used relatively frequently during the failure diagnosis work, the corresponding processing item is set in advance in the upper hierarchy, and the trouble of displaying the menu to the lower hierarchy one by one is eliminated. It is possible to omit it,
The vehicle has an electronic control system that controls the engine's fuel injection amount, ignition timing, etc., a transmission control electronic control system that controls the power train of an automatic transmission, etc., and an air conditioner control electronic that controls the air compressor of an auto air conditioner. It is equipped with various control systems such as a control system and an electronic control system for cruise control that keeps the running speed of the vehicle constant, and it is difficult to predict in advance what functions are frequently used. Conversely, assuming frequently-used functions in advance and setting the processing items corresponding to them in the upper hierarchy, the processing items in the upper hierarchy menu become enormous, and the processing items necessary for other failure diagnosis become unnecessary. Since the menu is relatively shifted to the lower hierarchy menu, there is a disadvantage that the usability is rather deteriorated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a vehicle failure diagnosis apparatus which can easily execute a function used at a relatively high frequency, has good operability, and has high work efficiency. I do.

[0011]

[MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
According to the first aspect of the present invention , the display of the apparatus body is
Eyes to display available menus, the lower layer from the upper layer by the key operation by selecting the item in the menu <br/> New
To specify the function to be executed while switching menus
The vehicle fault diagnostic apparatus adopting the layer structure scheme, to the lower layer from the upper layer by item selected in the menu
Normally specifying items to be executed while switching menus
Perform specific key operations in normal mode in addition to mode
By sequentially storing a series of key operation codes until a desired function from the upper hierarchy to the lower hierarchy is specified ,
A user registration mode for assigning the code to a designated function key, and a key including the function key
The corresponding function key by operating the touch mode selection key.
Characterized in that a batch mode for executing the series of codes stored in correspondence with the over.

[0012] The invention according to claim 2 provides the invention according to claim 1.
The batch mode containing the above function keys
Key operation is set in advance with the corresponding function key.
2-stroke key operation der of the batch mode key that you
Select the batch mode by operating the 2-stroke key
It is characterized by being performed.

That is, the first aspect of the present invention provides a menu
-Menu from upper hierarchy to lower hierarchy by selecting item in
In normal mode to specify items to be executed while switching
In addition, the user registration mode is
Selected. And, by selecting the user registration mode,
It is necessary to specify the desired function from the lower hierarchy to the lower hierarchy.
Key operation codes are stored in order and specified.
The above code is assigned to the assigned function key.
Then, select the batch mode including the above function keys.
Select the batch mode by operating the
A series of codes stored corresponding to the
Is performed.

According to a second aspect of the present invention, there is provided a method for selecting a batch mode.
When selecting a function key,
Batch by two-stroke key operation with
Mode is selected.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral A denotes a vehicle connected to an electronic control system C mounted on a vehicle B such as an automobile, which reads out various data including input / output data of each electronic control device by bidirectional communication, and A portable failure diagnosis device (hereinafter, referred to as a failure diagnosis device) that performs failure diagnosis on a control system of the electronic control system C.
"Select monitor"). In addition, the electronic control system includes power train control for an engine and an automatic transmission, and the like.
A general term for body control systems such as air conditioners and various information systems, and vehicle control systems such as suspension and auto cruise. Each control system controls the amount of control for actuators and the like based on input signals from various sensors and switches. And an electronic control unit for calculating the same.

The select monitor A has a general-purpose interface capable of supporting various electronic control systems irrespective of a vehicle type and a completed vehicle manufacturer. Also, in addition to the base function of failure diagnosis, abundant expansion of measurement function for measuring voltage, resistance, pulse signal, etc., communication function with computer by wire communication, wireless communication, optical communication, etc. function, expansion function of data memory, etc. It has a function and basically selects and executes various processes by a menu system having a hierarchical structure.

The select monitor A is provided with a display 30 composed of a liquid crystal display with a backlight, an indicator 31 composed of a plurality of LEDs, and a keyboard 32 on the front, and a memory cassette 50 described later on the side. Are detachably mounted. Keyboard 3 above
Reference numeral 2 denotes keys "S" (shift), "C" (select), "Y" (yes), and "N" (no) arranged at the four corners, and "" for moving the cursor in the left, right, up and down directions. ← ”,“ → ”,
"↑", "↓" direction keys, and lower F1-F4
Function keys.

The select monitor A is provided at a dealer's service factory or the like. As shown in FIG. 2, a main control unit 35 including a microcomputer, a power supply circuit 36 for supplying a constant voltage to each unit, and the like are provided. Is provided.
The main controller 35 includes a cassette connector 37.
, A detachable memory cassette 50 is connected so as to be exchangeable from outside. The power supply circuit 36
Corresponds to a so-called three-power supply that can supply power from the battery VB of the vehicle B via a cigarette lighter cable, from a general AC power supply via an AC / DC adapter, or by incorporating a battery. The above battery is also used as a backup power supply.

The main control unit 35 includes a CPU 40 as a main processing unit, a system boot program, data of menus and various messages displayed on the display 30,
And a ROM 41 for storing work data and a video RAM for storing image display data.
RAM 42 composed of an AM or the like, a diagnostic interface 43 serving as a connection interface with the electronic control device C mounted on the vehicle B, lighting (or blinking) of an LED of the indicator unit 31, and an input for processing a key operation signal from the keyboard 32. The display interface 44 and the ROM 51 provided on the memory cassette 50 are connected via a bus line. The RAM 42
A part of the backup RAM constitutes a backup RAM, and power is supplied to the backup RAM from the power supply circuit 36 even after the power is turned off, and data is retained.

The diagnostic interface 43 is
An FPGA (Field Programmable G) whose logic function can be re-programmed on-board by giving design information
ateArray). This FPGA
I / O interface connectable to various in-vehicle electronic control devices C, regardless of vehicle type and vehicle manufacturer, and
Hardware of a serial communication interface suitable for various communication protocols of the vehicle-mounted electronic control device C can be realized.

The memory cassette 50 allows the select monitor A to be used for general purposes with respect to differences in diagnosis items, vehicle types, and various communication protocols. A corresponding diagnostic processing program and design data including logic information for reprogramming the FPGA so as to conform to the communication protocol of the vehicle-mounted electronic control device C are stored.
Further, an additional dictionary for interpolating the dictionary stored in the ROM 41 is stored as needed.

At the time of failure diagnosis, a diagnostic processing program corresponding to the vehicle-mounted electronic control system C, and
A memory cassette 50 storing design data for reprogramming the FPGA of the diagnostic interface 43 is mounted, and the select monitor A is initialized, and the FPGA design data stored in the ROM 51 is transferred to the diagnostic interface 43. , F
The PGA is reprogrammed so that I / O connection and serial communication with the on-vehicle electronic control device C are possible.

The design data of the FPGA constituting the diagnostic interface 43 is not necessarily limited to the data stored in the ROM 51 in the memory cassette 50. For example, the boot program of the CPU 40 is changed to change the external computer. May be loaded from the FPGA.

As described above, the operation performed using the select monitor A is basically set so as to display a menu in a hierarchical structure, and by selecting a processing item in the menu, an advanced operation is performed. Processing such as failure diagnosis can be performed without requiring extensive knowledge and experience. In the select monitor A according to the present embodiment, the menu displayed by the hierarchical structure method is sequentially selected from the upper hierarchy to the lower hierarchy, and the on-vehicle electronic control system C is selected.
In advance, a so-called normal mode for specifying data to be transmitted to the user and a processing procedure for the operator to sequentially select from the upper hierarchy to the lower hierarchy of the menu display according to the above hierarchical structure are registered in advance, and the processing items in the menu are registered. A menu is selected from a higher hierarchy to a lower hierarchy in order to execute (skip) a registered process immediately by a simple two-stroke key operation without any selection, and to execute a batch process in the batch mode. And a user registration mode for registering a key code corresponding to a series of key operations until a desired function is selected.

When the select monitor A is connected to the on-vehicle electronic control system C and the input / output data of the electronic control unit incorporated in the electronic control system or the internal calculation data is read to perform the fault diagnosis, FIG. As shown in the figure, the diagnostic connector 33 provided at one end of the diagnostic cable 34 is connected to the select monitor A, and the external connection connector 2a provided at the other end of the diagnostic cable 34 is connected to the in-vehicle electronic control system C. Connect to the electronic control unit incorporated in the control system C. When a power switch (not shown) of the select monitor A is turned on, an initial menu is displayed on the display 30. When the power switch is turned on, an F-key display section 30a indicating functions assigned to the function keys F1 to F4 is displayed at the bottom of the display 30 (see FIG. 9). On the other hand, the cursor immediately after the menu is displayed on the display 30 is at the position of the uppermost processing item, and the processing item at the cursor position is highlighted.

In the normal mode, when the operator moves the cursor to select a desired processing item from the initial menu by operating a key and selects and fixes the selected processing item, a lower-level menu relating to the determined processing item is displayed on the display 30, and the lower-level menu is displayed. A desired processing item is further selected from the processing items in the hierarchical menu. In this way, the operator can display 3
0 displays the menu in order from the upper hierarchy to the lower hierarchy,
When a desired processing item in the menu is selected when the lowest hierarchical menu is displayed, a request for transmitting data corresponding to the processing item is output to the on-vehicle electronic control system C. At C, the corresponding data is read and transmitted to the select monitor A.
In the select monitor A, the received data is converted into a physical quantity and displayed on the display 30, and the operator performs a failure diagnosis while checking the displayed data.

In the user registration mode, a series of key codes corresponding to key inputs are sequentially registered by performing the same operation as in the normal mode, and functions for executing the series of key codes are provided by F1 to F4. Assign to any function key. The S key is a batch mode key,
When the S key is pressed, a batch mode is started, and a so-called 2 key of this S key and a Fi (i = 1, 2, 3, 4) key to which a function for executing a series of registered key codes is assigned.
The above series of key codes is automatically executed by the stroke key operation.

Hereinafter, the respective processes of the normal mode, the user registration mode, and the batch mode using the select monitor A will be described with reference to the flowcharts shown in FIGS.

First, a memory cassette 50 compatible with the control system of the on-vehicle electronic control system C to be diagnosed is mounted on the main body of the select monitor, and the select monitor A is connected via the diagnostic cable 34 to each control of the on-vehicle electronic control system C. Connect to the electronic control unit provided in the system and turn on the power switch
Then, the CPU 40 that controls the select monitor A is reset, and the main routine shown in FIG. 3 starts.

In this main routine, first, in step S1, a flag is cleared, a function mode is set for each key of the keyboard 32, and a mode selection flag Flag1 indicating which of the user registration mode and the normal mode is selected. Initialization of the system, such as clearing, is performed. At step S2, the image data of the select monitor menu, which is the initial image, is read from the menu table storing the image data. At step S3, this image data is displayed on the display 30. Image display processing to be performed.
As the image data of the select monitor menu, two types of image data of the select monitor menu for the normal mode and the select monitor menu for the user registration mode are stored.

The image display processing in step S3 is executed by a subroutine shown in FIG. First, in step S41, the value of the mode selection flag Flag1 is referred to, and when Flag1 = 1, the process proceeds to step S42, where F1 is set.
When lag1 = 0, the process proceeds to step S43. After the power switch is turned on, the mode selection flag Flag1 is cleared in the first routine, so that step S42 is executed.
To select the normal mode select monitor menu. In step S44, the select monitor menu data is stored in the RAM 42. In step S45, the RA
The image data of the normal mode select monitor menu stored in M42 is output to the video RAM, and step S46 is performed.
To display the select monitor menu for the normal mode on the display 30 and proceed to step S4 of the main routine.
Wait for operator key input.

As shown in FIG. 9A, the select monitor menu for the normal mode is a top menu having seven processing items including extended functions.
F key display unit 30 indicating the function of each function key
a is displayed.

In the present embodiment, the user registration mode is assigned to the F1 key, and "registration start" is displayed in a portion of the normal mode select monitor menu where the function of the F1 key is displayed on the F key display section 30a. A text image is displayed,
When the operator presses the F1 key, the select monitor A is set to the user registration mode, and the select monitor menu for the user registration mode is displayed on the display 30. The processing items of the select monitor menu for the user registration mode are the same as those of the select monitor menu for the normal mode. However, as shown in FIG. "End of registration"
Is displayed, and thereafter the select monitor A is in the user registration mode until the F1 key is pressed again.

When the process proceeds to step S4 of the main routine, a subroutine for interpreting the key input by the operator is executed. This subroutine is executed according to the flowchart shown in FIG.

First, in step S51, a key input by an operator is waited. When a key input is made, the process proceeds to step S52, where the key input is code-converted with reference to the key code table, and the key input contents are interpreted. In S53, the value of the mode selection flag Flag1 is referred to. When the first routine is executed after the power switch is turned on, since Flag1 = 0, the process exits the routine as it is, proceeds to step S5 of the main routine, and checks whether the key input interpreted in step S4 is the F1 key. When the F1 key is pressed in the normal mode as described above, the select monitor A enters the user registration mode, and thereafter, the user registration mode is maintained until the F1 key is pressed again.

In the following description, a case will be described in which, after the normal mode select monitor menu is displayed on the display 30, the user registration mode is first activated by pressing the F1 key. Note that selection of a processing item from the menu in the normal mode is performed through the same steps as in the user registration mode, and a description of the normal mode will be omitted.

When the operator is in the state where the select monitor menu for the normal mode shown in FIG.
When the F1 key is first pressed, the contents of the key input are interpreted in step S4, and the flow branches from step S5 to step S6 because of the F1 key input.
flag1 is set (Flag1 ← 1), and step S2 is set.
Return to

In step S2, the image data of the select monitor menu is read from the menu table again. In step S3, an image display process for displaying the image data on the display 30 is executed by a subroutine shown in FIG. Then, the value of the mode selection flag Flag1 is referred to, and since Flag1 = 1, the process proceeds to step S43, where the image data of the select monitor menu for the user registration mode is selected from the image data of the select monitor menu, and the process proceeds to step S44. The image data of the select monitor menu for the user registration mode is stored in the RAM 42, and the RAM
The image data of the select monitor menu for the user registration mode stored in 42 is output to the video RAM, and the select monitor menu for the user registration mode (see FIG. 9 (b)) is displayed on the display 30 in step S46. To step S4, and waits for a key input by the operator.

When the menu is displayed on the display 30, the cursor is set to indicate the processing item at the top. Therefore, in the select monitor menu, "1. Check all diagnostic codes" is highlighted.

Then, in step S4 of the main routine, the above-described subroutine shown in FIG. 7 is executed. That is, in step S51, a key input from an operator is waited. When there is a key input, the process proceeds to step S52, the key input is converted into a code by referring to a key code table, and the key input content is interpreted. , Refer to the value of the mode selection flag Flag1. Since the current mode selection flag Flag1 is 1, the process proceeds to step S54, where the key input conversion code is stored in the user registration memory area provided in the RAM 42, and the process proceeds to step S5 of the main routine.

Returning to the main routine, in steps S5, S7, S9, and S11 of this main routine, the key input interpreted in step S4 is the F1 key, the up (“↑”) key, or the down ( Check whether the key is the “↓”) key or the Y key. If the key is the up direction (“↑”) key, proceed from step S7 to step S8, move the cursor up one step and return to step S4. If the input is a down (“↓”) key, the process proceeds from step S9 to step S1.
0, the cursor is moved down one step, and step S4
Return to step S1 if the key input is the Y key.
Proceed to step 2 to execute a subroutine for displaying a lower-level menu for the selected processing item.

This subroutine is executed according to the flowcharts shown in FIGS.
Reads the image data of the lower hierarchical menu relating to the processing item selected in the select monitor menu from the memory table, and executes a subroutine for displaying the image data on the display 30 in step S22. Note that two types of image data, a normal mode menu and a user registration mode menu, are stored as image data of the menu.

In step S22, the above-described subroutine shown in FIG. 6 is executed. In step S41, the value of the mode selection flag Flag1 is referred to, and since Flag1 = 1, the flow advances to step S43 to proceed to the user registration mode menu. The image data of the user registration mode menu is stored in the RAM 4 in step S44.
2 in step S45, and outputs the image data of the user registration mode menu stored in the RAM 42 to the video RAM in step S45.
A menu for the user registration mode is displayed at 0, and the process proceeds to step S23 in FIG.

In this step S23, the above-described subroutine shown in FIG. 7 is executed. In step S51 of this subroutine, a key input by an operator is waited. When there is a key input, the flow proceeds to step S52 to refer to the key code table. Then, the key input is code-converted, the key input content is interpreted, and in step S53, the value of the mode selection flag Flag1 is referred to. Since the value of the mode selection flag Flag1 is 1, the process proceeds to step S54, where the conversion code of the key input is sequentially stored in the user registration memory area provided in the RAM 42, and the subroutine shown in FIG.
Proceed to 4.

In the subroutine shown in FIG.
24, S25, S27, and S29, the above-described step S23
Checks whether the key input interpreted in step is “C” key, up (“↑”) key, down (“↓”) key, or Y key. The process returns to step S2 of the main routine shown in FIG.
As a result, the select monitor menu, which is the upper layer of the menu, is displayed on the display 30.

On the other hand, when the key input is the upward ("↑") key, the process proceeds from step S25 to step S26, moves the cursor one step upward, returns to step S23, and waits for the next key input. If the key input is a down direction ("↓") key, the process proceeds from step S27 to step S28, moves the cursor one step down, returns to step S23, and waits for the next key input. If the key input is the Y key, the process proceeds to step S30, where the cursor is selected by moving the cursor with the up / down ("↑", "↓") keys, and the process relating to the process item confirmed by pressing the Y key is executed. You.

In step S30, a lower-level subroutine similar to the flowchart shown in FIG. 4 is executed, or if the menu is the lowest-level menu, a data transmission request for the selected processing item is sent. A process of outputting the data to the in-vehicle electronic control system C and displaying the data transmitted from the in-vehicle electronic control system C is executed on the display 30.

As described above, the operator uses the up (“↑”) key, the down (“↓”) key, and the Y key to sequentially open the lower hierarchy menu until the desired hierarchy screen is obtained. This key operation is performed in step S
At 54, the data is sequentially stored in the user registration memory.

Then, when reaching the desired screen, the operator presses the F1 key for ending the registration. F1 key input is
Interpreted in step S23, the process proceeds to step S32 via step S31, and refers to the value of the mode selection flag Flag1. Then, since Flag1 = 1, the process proceeds to step S33 to execute a subroutine for performing a registration end process, and after the subroutine ends, returns to step S21.

In step S33, a subroutine shown in FIG. 8 is executed. In this subroutine, first, in step S61, the mode selection flag Flag1 is cleared (Flag1 ← 0), and in step S62, the image data of the function key assignment request shown in FIG. 13 is read from the memory table of the image data, and step S63 is performed.
Then, an image display process for displaying the read image data on the display 30 is executed. This image display processing
This is executed according to the subroutine shown in FIG. 6, and in step S41, the value of the mode selection flag Flag1 is referred to,
Since Flag1 = 0, the flow advances to step S42 to extract the function key assignment request image data from the display data for the normal mode. In step S44, the image data is stored in the RAM 42, and in step S45, the image data is stored in the RAM 42. The image data of the requested function key assignment is output to the video RAM, and is displayed in step S46, and the process proceeds to step S64 in FIG.

At step S64, the subroutine shown in FIG. 7 is executed. First, at step S51,
Waiting for a key input, when there is a key input, step S5
Then, the process proceeds to step S53, where the key input is code-converted with reference to the key code table, and the input key is interpreted.
, Refer to the value of the mode selection flag Flag1. Fl
Since ag1 = 0, the routine exits as it is and FIG.
The process proceeds to step S65 of the subroutine shown in FIG.

In step S65, it is determined whether the key input interpreted in step S64 is the C key. If the key input is other than the C key, the flow advances to step S66. In step S66, it is determined whether the key input interpreted in step S64 is a function key.
Return to step 4 and wait for the function key input.

If any of the function keys F1 to F4 has been input, the flow advances to step S67 to store the user registration memory area of the backup RAM provided in the RAM 42 corresponding to the input function key in FIG. The key codes stored in step S54 are sequentially stored, and the process proceeds to step S68.

In step S68, the "user" is displayed at the portion of the F key display section 30a of the display 30 corresponding to the key input function key Fi (i = 1, 2, 3, 4) for displaying the function of the Fi key. A character image indicating that the user registration has been assigned is displayed. Then, at the time of user registration in step S69, the key code stored in the predetermined memory area of the RAM 42 is cleared, and the process returns to step S64 to wait for input of the C key. Then, when the C key is input, the process exits the routine via step S65, returns to step S21 in FIG. 4, and returns to steps S21 and S21.
At 22, the previous menu screen is displayed on the display 30, and the user registration mode is terminated.

When there is a "C" key input on each menu screen, the key input is converted and interpreted in a step S23, and it is checked whether or not the key input is the C key in a step S24. If the key is the key, the process exits the routine as it is, and returns to the routine for displaying a menu on the upper hierarchy of the menu. Therefore, every time the C key is pressed during execution of each subroutine, the menu screen displayed on the display 30 shifts to the upper hierarchical menu, and finally the select monitor menu, which is the uppermost hierarchical menu, is displayed.

When the S key is pressed while the select monitor menu is displayed on the display 30, the process proceeds from step S13 to step S14 in FIG. 3, and a function by user registration is assigned to any of the function keys. Is checked, and if assigned, step S
The process proceeds to step S15, and if not assigned, returns to step S4.

When the operator presses the S key, the select monitor A is set to the batch mode, and if a function by user registration is assigned to any of the function keys, the function of the F key display section 30a is determined in step S15. Is assigned to the corresponding part of the function key to which
Display a character image such as “user” (see FIG. 14),
In step S16, it is checked whether there has been a two-stroke key input of the "S" + "Fi" key. Since the current key input is the S key, the process returns to step S4, and “S” + “Fi”
Wait for key input. When there is an input of the "S" + "Fi" key, steps S16 to S1 are performed.
Then, the process proceeds to step 7, where a batch process for sequentially executing a command corresponding to the key code stored in the user registration memory area of the backup RAM corresponding to the selected Fi key is performed.

As a result, when the select monitor menu (see FIG. 14), which is the initial screen, is displayed on the display 30, the operator performs a two-stroke key operation of the S key and the function key to which functions have been assigned by user registration. By simply performing the operation, it is possible to skip to the desired function execution screen. For example, when the procedure up to monitoring the data of the in-vehicle electronic control system C is registered, the display 30 receives the information from the in-vehicle electronic control system C. The data can be displayed immediately.

When the S key is pressed while the lower hierarchy menu of the select monitor menu is displayed on the display 30, the select monitor A is set to the batch mode. That is, when the S key is pressed, the select monitor A enters the batch mode, and proceeds from step S34 of the subroutine shown in FIGS.
It is checked whether there is a user registration assigned to the Fi key. If it has been assigned, the process proceeds to step S36, and if it has not been assigned, the process returns to step S23. Step S above
When the user proceeds to step 36, a “user” (FIG. 1) is displayed in a portion corresponding to the registered function key on the F key display portion 30a.
4) is displayed, and it is checked in step S37 whether a two-stroke key input of the "S" + "Fi" key has been performed. Since the current key input is the S key, the process returns to step S23 and waits for the input of the "S" + "Fi" key. When there is an input of the "S" + "Fi" key, steps S37 to S38 are performed.
To the backup R corresponding to the selected Fi key
A series of key codes stored in the AM user registration memory area are batch processed.

Next, in accordance with the menu screen display examples shown in FIGS. 9 to 16, for example, in the user registration mode, “2. Vehicle system failure diagnosis” in the select monitor menu is changed to “1. A process of registering key codes up to "memory" and executing a series of key codes registered in the user registration mode in the batch mode will be described.

When the power of the select monitor A is turned on, a select monitor menu for the normal mode as shown in FIG. 9A is displayed on the display 30, and the function display of the F1 key of the F key display section 30a at the bottom of the display is displayed. A character image of “Start registration” is displayed on the part (step S
3). At this time, the cursor is located at the uppermost position of "1. Inspection of all diagnostic codes".

When the operator presses the F1 key, the select monitor A enters the user registration mode (step S).
6, S43), as shown in FIG. 9B, "registration completed" is displayed on the function display portion of the F1 key of the F key display section 30a, and the user registration mode is maintained until the F1 key is pressed again. You.

At this time, since the cursor is at the position of “1. Inspection of all diagnostic codes” at the top, in order to select “2. Diagnosis of vehicle system failure”, a downward direction (“↓”) is selected.
Key is pressed once, the cursor is lowered by one step, and "2. Diagnosis of vehicle system failure" is highlighted (step S).
8) Press the Y key to select "2. Diagnosis of vehicle system failure".
Confirm your selection. Then, as shown in FIG. 10, the display 30 displays a vehicle system selection menu, which is a lower hierarchical menu relating to “2. vehicle system failure diagnosis” (step S12). Here, for example, “1. EGI · EMPi ”, that is, when selecting a failure diagnosis item for the engine control electronic control system,
Since the cursor is at the position of “1. EGI • EMPi” at the top, the “1. EGI • EMPi” is determined by pressing the Y key without moving the cursor (step S30).

Then, the display 30 is displayed as shown in FIG.
As shown in (a), an EGI / EMPi failure diagnosis menu, which is a lower hierarchical menu related to “1. EGI / EMPi”, is displayed. Here, the Y key is pressed to display “1. Select and confirm the processing item. The EGI / EMPi failure diagnosis menu is the lowest hierarchical menu. By selecting the processing item of “1. Data display / memory”, the engine rotation is controlled by the electronic control device provided in the engine control electronic control system. A request for transmission of data such as the number, ignition timing, and fuel injection pulse time is made. Upon receiving the transmission request from the select monitor A, the electronic control unit receives input / output data of the electronic control unit,
And the calculation data and the like are transmitted to the select monitor A.

The select monitor A receives each data from the electronic control unit of the engine control electronic control system, converts the data into physical quantities, and displays them on the display 30 as shown in FIG. Note that the data displayed on the display 30 is merely an example, and if the down (“↓”) key is kept pressed, the screen scrolls, and another data is displayed at the bottom.

Thereafter, when the operator presses the F1 key, the user registration mode is terminated, and a message "Please select a function key to be assigned" is displayed on the display 30, as shown in FIG. 13 (step S62). .S
63) For example, when the F3 key is pressed, as shown in FIG. 13, a function display portion corresponding to the F3 key of the F key display portion 30a displayed at the bottom of the display 30,
The character image of "user" is displayed. At this time, RAM
F3 provided in the backup RAM constituting a part of
In the user registration memory area corresponding to the key, as shown in FIG. 15, in the state of the initial screen where the select monitor menu is displayed, a key code (in FIG. Indicates a key operated for convenience).

Then, when the operator presses the C key, the current screen is cleared, and the display 30 displays the EGI / EMPi failure diagnosis menu which is the immediately previous menu. At this time, the select monitor A has been switched from the user registration mode to the normal mode, and as shown in FIG. 11B, is assigned to the function display portion of the F1 key of the F key display section 30a in the normal mode. The function is displayed.

Next, when the function assigned to the F3 key is executed, when the S key is pressed on the initial screen displaying the select monitor menu, the select monitor A enters the batch mode (steps S13 to S14), A character image of "user" indicating that user registration has already been set is displayed on a portion of the F key display unit 30 where the function of the F3 key is displayed (see FIG. 14).

Next, the batch process of the function assigned to the F3 key is executed by the two-stroke key operation of the "S" + "F3" keys (steps S16 and S17). In the batch process, the CPU 40 changes the state of the initial screen of the select monitor menu shown in FIG.
The command corresponding to the key code of each key of “Y” → “Y” → “Y” is executed in order. First, the command for lowering the cursor by one step is executed by the key code corresponding to the “↓” key. Is "2. Diagnosis of vehicle system failure"
Is selected, and then a command for determining the above-mentioned “2. Vehicle system failure diagnosis” is executed by the key code corresponding to the Y key. A selection menu of the vehicle system, which is a menu, is displayed. Next, “1. EGI / EMPi” in the processing item at the top of the vehicle system selection menu is selected and determined by a key code corresponding to the Y key, and the display is displayed. 30 includes “1.
EGI ・ E which is a lower hierarchical menu related to “EMPi”
The MPi failure diagnosis menu is displayed, and then “1. Data display / memory” in the EGI / EMPi failure diagnosis menu is selected and determined by the key code corresponding to the Y key.

The EGI / EMPi failure diagnosis menu is the lowest hierarchical menu, and a request for transmitting data read in “1. Data display / memory” is output to an electronic control unit provided in the engine control electronic control system. Is done.
The electronic control unit transmits the requested data to the select monitor A. The select monitor A converts the received data into a physical quantity and displays it on the display 30.

As described above, the operator assigns a series of key operations up to execution of a relatively frequently used function to a specific function key, and thereafter, the S key and the function key to which the function is assigned are assigned. Batch processing is performed by the two-stroke key operation described above, and a desired function, for example, data from each electronic control system mounted on the vehicle B can be instantaneously read, thereby greatly improving workability.

In the user registration mode, when the data to be read from the electronic control system mounted on the vehicle B is individually selected, for example, as shown in FIG. When the data of the electronic control device provided in the electronic control system is displayed, operate the up / down (“↑”, “↓”) keys to move the cursor to the data to be displayed individually, and press the Y key. ,
An asterisk (*) or the like is displayed at the beginning of the data, and a tag is attached to the data. When the user presses the Y key at the end and then presses the Y key after the data to which the tag is attached, individual selection of the data is determined. The key operation up to this point can be assigned to a specific function key in the user registration mode. In this case, when the batch mode is executed thereafter, as shown in FIG. Selected in registration mode,
Engine speed, cooling water temperature, ignition timing, air flow signal, throttle sensor signal, fuel injection pulse (time)
Only is displayed.

[0074]

As described above, according to the first aspect of the present invention, an item in a menu is selected and a lower level is selected.
Specify the items to be executed while switching the menu to the hierarchy
In the normal mode, a specific key operation
User registration mode is selected. And user registration mode
Desired function from upper layer to lower layer by selecting
A series of key operation codes up to the identification of
And the above function code is assigned to the specified function key.
Is assigned. And include the above function keys
The batch mode is selected by the batch mode selection key operation.
Is stored for the corresponding function key.
As a series of codes are executed, the hierarchical structure is
User registration, even if it specifies a diagnostic function
Depending on the recording mode selected, the
Assign a series of key operation codes to specified function keys
The corresponding function key.
Batch mode selection key operation
To perform the desired function immediately.
You. This allows func-
If you want to execute immediately when you want
Operability can be significantly improved
You. In other words, a diagnostic function with a hierarchical structure by key operation
Assuming a vehicle failure diagnosis device that identifies
-Hierarchical structure for function identification and fan
Machine with batch mode selection key operation including operation keys
For workers who are both unfamiliar with operation because they are compatible with
Is easier to use by specifying functions in a hierarchical structure
Functions that are relatively frequently used.
The key operation code depending on the user registration mode.
Must be assigned to the specified function key and registered.
And select the batch mode including the corresponding function key
Execute immediately by selecting batch mode by key operation
It is easy to use and can improve work efficiency significantly.
Can be.

According to the second aspect of the present invention, the corresponding fan
And a batch mode key set in advance.
Batch mode is selected by troking key operation
Thus, in addition to the effects of the invention described in claim 1, key operation
Mistaken operation due to the
Has the effect of properly preventing switching to
You.

[Brief description of the drawings]

FIG. 1 is an external view of a failure diagnosis device connected to an on-vehicle electronic control system.

FIG. 2 is a circuit block diagram of a vehicle-mounted electronic control system and a failure diagnosis device.

FIG. 3 is a flowchart showing a failure diagnosis processing routine in the failure diagnosis device.

FIG. 4 is a flowchart showing a failure diagnosis processing subroutine in the failure diagnosis device.

FIG. 5 is a flowchart showing a failure diagnosis processing subroutine in the failure diagnosis device (continued).

FIG. 6 is a flowchart showing an image display processing subroutine in the failure diagnosis device.

FIG. 7 is a flowchart showing a key input interpretation processing subroutine in the failure diagnosis device;

FIG. 8 is a flowchart showing a registration end processing subroutine in a user registration mode in the failure diagnosis device.

FIG. 9 is an explanatory diagram of a select monitor menu image.

FIG. 10 is an explanatory diagram of a selection menu image of the vehicle system.

FIG. 11 is an explanatory diagram of an EGI / EMPi failure diagnosis menu image.

FIG. 12 is an explanatory diagram showing display contents of data transmitted from the vehicle-mounted electronic control system.

FIG. 13 is an explanatory diagram of a message image at the end of the user registration mode.

FIG. 14 is an explanatory diagram of a select monitor menu image in a normal mode.

FIG. 15 is an explanatory diagram of a key code stored in a user registration memory area of a backup RAM provided in the failure diagnosis device.

FIG. 16 is an explanatory diagram showing display contents when data transmitted from the vehicle-mounted electronic control system is selectively displayed.

[Explanation of symbols]

 A: Failure diagnosis device B: Vehicle C: In-vehicle electronic control system 30: Display 32: Keyboard F1-F4: Keys for assigning functions S: Batch mode key

Continuation of front page (56) References JP-A-6-11422 (JP, A) JP-A-1-184522 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G06F 3 / 02 B60R 16/02

Claims (2)

(57) [Claims] 1. Items can be selected on the display of the apparatus body
Function menu, and key operations
Menu from upper hierarchy to lower hierarchy by selecting item
Hierarchical method to specify functions to be executed while switching
The vehicle fault diagnostic apparatus employing a lower layer from the upper layer by item selected in the menu
To specify items to be executed while switching menus
In addition to the normal mode, perform specific key operations in the normal mode.
With this, a series of key operation codes until a desired function from the upper hierarchy to the lower hierarchy is specified is stored in order.
Assign the above code to the specified function key
And Teru user registration mode, batch mode selection key Misao including the function keys
Depending on the function key
Vehicular failure diagnosis apparatus according to claim <br/> that a batch mode for executing the series of codes. 2. A batch mode including the function keys.
Key operation is set in advance with the corresponding function key.
2-stroke key operation der of the batch mode key that you
Select the batch mode by operating the 2-stroke key
The fault diagnosis device for a vehicle according to claim 1, wherein the fault diagnosis is performed.