JP2000146766A - Handy tester for diagnosing vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily search for a time point when contents of malfunction information changes without reducing a display amount of monitor data even when the malfunction information of mounted parts is output as set data to the monitor data. SOLUTION: Monitor data of a drive state obtained by an electronic control system of a vehicle and malfunction information of mounted parts are input via a connection connector 3 and a communication line 2 and stored in a memory 11. A control part 10 of a handy tester 1 judges whether or not malfunction information set to the monitor data is equal to malfunction information set to monitor data detected immediately before. Unless the information is equal, a double circle mark and monitor data are combined and displayed in a form of a spread sheet at a display part 5. When the information is equal, a circle mark and monitor data are combined and displayed. A transient screen is opened in the display part 5 and malfunction information is displayed by depressing a double circle mark or a circle mark.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle diagnosis which is connected to an electronic control system mounted on a vehicle, reads out driving condition data at predetermined time intervals detected by the electronic control system and defect information of the mounted equipment, and displays the readout information. Handy tester

[0002]

2. Description of the Related Art In order to diagnose a vehicle engine and an automatic transmission, etc., it is connected to an on-vehicle electronic control system that controls these engines and automatic transmissions, and acquires data on the vehicle side.
2. Description of the Related Art Vehicle diagnostic handy testers for recording and displaying have been widely used in vehicle dealers and service factories.
At the time of vehicle diagnosis, this handy tester is connected to the vehicle to establish a communication link with the onboard electronic control system,
Collect and display data required for diagnosis.

For example, in an engine control system, which is one of electronic control systems, a detection value detected by a crank angle sensor, an air flow meter, and a water temperature sensor is obtained as monitor data of operating conditions, and is output to a handy tester. Also, the engine control system
O ₂ detects the operation status of the sensor and the throttle sensor, when a failure has occurred, outputs the defect information as the monitor data and set data.

[0004] These data are displayed on a display unit of the handy tester in a spreadsheet format as shown in FIG. In this spreadsheet, monitor data is displayed in order of detection time in order from the top of the screen for each monitor item. In addition, the defect information is displayed as a message such as “******** O2 sensor ****” below the monitor data.

[0005]

However, according to the display method in the spreadsheet format as described above, when the same defect information is continuously detected, as shown in FIG.
Since the defect information is displayed for each monitor data, the amount of the defect information displayed on the screen increases, and there is a problem that the display amount of the monitor data as the operation status data decreases.

[0006] Further, as important information in performing a failure diagnosis of a vehicle, there is a change state of the defect information content, driving state data at the time when the defect information changes, and the like. With the conventional display method, the user of the handy tester must scroll the spreadsheet and visually check the contents of the defect one by one in order to search for the point at which the defect information has changed. However, there was a problem that the time was long.

Therefore, according to the present invention, even if the defect information is output in addition to the driving condition data because the mounting component has a defect, the display amount of the driving condition data is not reduced and the defect information is not reduced. It is an object of the present invention to provide a vehicle diagnostic handy tester capable of easily searching for a point at which the content has changed.

[0008]

SUMMARY OF THE INVENTION Therefore, the present invention is connected to an electronic control system mounted on a vehicle via a communication means, and is added to driving state data and driving state data at predetermined time intervals from the electronic control system. In the vehicle diagnostic handy tester that acquires the defect information of the mounted components by the communication means, stores the information in the storage unit, and displays the driving status data and the defect information of the mounted components, the driving status data is displayed on the display unit in a spreadsheet format. Display, and when the defect information of the mounted component is added to the operation status data, the defect information of the mounted component is the same information as the defect information of the mounted component added to the operation status data detected immediately before. If there is, the first mark is displayed in combination with the driving situation data. If not the same information, the second mark is displayed in combination with the driving situation data. The first mark or the second mark
When the driving condition data displayed in combination with the mark is selected, display control means for displaying trouble information is provided.

The display control means opens a transition screen on the display unit when the driving condition data displayed in combination with the first mark or the second mark is selected,
It is preferable to display defect information of the mounted component.

[0010]

When the information on the mounted components is added to the operation status data and input, the error information is not displayed in the spreadsheet, but indicates that the operation status data and the error information are added. Display by combining marks. As this mark, if the defect information set in the driving condition data is the same as the defect information set in the driving condition data input immediately before, the first mark is displayed. Display the second mark. When the first mark or the second mark is selected, the defect information is displayed.

Therefore, even if the defect information is added to the driving condition data, it is possible to prevent the display amount of the driving condition data displayed on the spreadsheet from decreasing. Further, when the defect information set in the driving condition data is not the same as the defect information set in the driving condition data input immediately before, that is, when the contents of the defect information change, a second mark is displayed. Therefore, the point at which the content of the defect information has changed can be easily searched.

[0012] Further, when the operating condition data to which the first mark or the second mark is added is selected, a transition screen is opened and the trouble information is displayed, so that the user desires to display the trouble information. In this case, the defect information can be clearly displayed on a large screen by a simple operation.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to examples. FIG. 1 is an overall block diagram showing the configuration of the embodiment. The handy tester 1 can be connected to the vehicle 4 via the connection connector 3 by the communication line 2. The handy tester 1 is provided with a display unit 5 for displaying monitor data as driving situation data and fault information of mounted equipment, and a transmitting / receiving unit 6 for communicating with the vehicle side. Details of the configuration will be described later.

On the vehicle 4, electronic control systems A, B, C, and C for controlling and diagnosing an engine and an automatic transmission are provided.
D connects the transmission / reception units 7A, 7B, 7C, 7D to the communication line 8, and the communication line 8 is connected to the connection connector 3.
Each of the electronic control systems A, B, C, and D appropriately monitors the operation state of a target device such as an engine and detects the operation state of a mounted device during or during vehicle operation.

When a problem occurs in the operation of the mounted device, the monitor data detected at that time and the trouble information of the mounted device are held as set data. Further, in accordance with an instruction from the handy tester 1, the data held by the handy tester 1 is output to the handy tester 1.

FIG. 2 is a block diagram showing details of the handy tester 1. The display unit 5 and the input unit 9 are connected to a control unit 10, and the control unit 10 has a communication function with the vehicle side.
Is connected to

The control unit 10 has a built-in memory 11, forms a communication link with the electronic control system through the communication line 2, the connector 3, and the communication line 8, selects an electronic control system to communicate with, and takes in and takes in data. The stored data is stored in the memory 11 and displayed on the display unit 5. Display 5
Is composed of a liquid crystal display screen. The input unit 9 is configured by a touch panel, and input can be performed by pressing a corresponding part provided in the display screen of the display unit 5.

FIG. 3 is an example of a screen displayed on the display unit 5. The time stamp display section 21 displays the elapsed time from the reference time. The monitor item display section 22 displays items monitored by each electronic control system. The monitor data display section 23 displays monitor data for each monitor item. The latest monitor data is displayed at the bottom of the monitor data display section 23, and when the next monitor data is displayed, it is scrolled sequentially from bottom to top.

The input display section 24 displays input items necessary for setting the display screen. By pressing the “arrows” in the up, down, left, and right directions displayed on the input display unit 24,
The position of the displayed cursor changes. Pressing "back" returns to the previous display screen, and pressing "mode" returns to the mode setting screen for selecting an electronic control system for capturing data or setting a display mode.
The mark display section 25 displays a double circle mark or a circle mark described later.

Next, an operation flow when an engine control system is selected as the electronic control system will be described. First, the communication line 2 extending from the handy tester 1
Is connected to the vehicle to be diagnosed by the connection connector 3, and the ignition switch and the handy tester 1 (not shown) of the vehicle are turned on. By the input unit 9,
When the engine control system is selected, the control unit 10 sends an engine control system selection signal via the transmission / reception unit 6.

When the engine control system receives the engine control system selection signal, it outputs the output of the crank angle sensor, the air flow meter and the water temperature sensor detected every 20 ms as monitor data to the communication line 8, the connector 3, and the communication line 2. Control unit 1 via
Output to 0. Also, the engine control stem is
The operating state of the throttle sensor and the O2 sensor is detected, and if a malfunction has occurred, it is output as monitor data and set data as malfunction information of the mounted device.

The control section 10 stores the received monitor data and fault information in the memory 11. Note that the memory 11 constitutes a storage unit of the invention, and the monitor data corresponds to the operation status data of the invention.

Next, a method of displaying data stored in the memory 11 will be described in detail with reference to a flowchart shown in FIG. In step 101, it is checked whether or not the failure information of the mounted device is set in the i-th monitor data in the monitor data stored in the memory 11. i is 1
An integer up to N, where N is the total number of shots of the monitor data recorded in the memory 11. If the defect information is set, the process proceeds to step 104. If the defect information has not been set, the process proceeds to step 102.

In step 102, the monitor data is displayed on the monitor data display section 23 of the display section 5. If the monitor data in which the failure information of the mounted device has never been input from the first to the i-th, the i-th monitor data is displayed at the bottom of the display screen and the time stamp is displayed. Is displayed as "00" 00. i
For the monitor data before the i-th monitor time, a negative time stamp based on the i-th monitor data is displayed. In step 103, 1 is added to i, and the process returns to step 101.

In step 104, it is checked whether or not the (i-1) -th monitor data contains the failure information of the mounted device. If there is defect information, step 106
Proceed to. If there is no defect information, step 105
Proceed to. In step 105, as shown in FIG. 3, the double circle mark 26 is displayed on the mark display section 25, and in step 102, the (i) th monitor data is displayed.

At this time, if the monitor data in which the failure information of the mounted device has not been input at least once from the first to the i-th time, as shown in FIG. Is set to “00” 00, and the subsequent time stamps indicate the elapsed time based on the i-th measurement time. Then, at step 103, 1 is added to i, and the process returns to step 101.

In step 106, information on the failure of the mounted device set in the i-th monitor data and (i-
1) It is determined whether or not the failure information of the mounted device set in the first monitor data is the same, and if it is the same, the process proceeds to step 107. If the information is different, the process proceeds to step 108. Step 107
Then, as shown in FIG.
7 is displayed, and in step 102, the (i) th monitor data is displayed. In step 103, 1 is added to i, and the process returns to step 101.

In step 108, the double circle mark 26 is displayed, and in step 102, the (i) th monitor status data is displayed. In step 103, 1 is added to i, and the process returns to step 101. The above steps are repeated until the display of all data stored in the memory 11 ends. Steps 101 to 108 of the flowchart constitute a display control means of the present invention. Also,
The circle mark 27 is the first mark of the invention, and the double circle mark 2
6 corresponds to the second mark.

Next, the details of the flow in which the display contents shown in FIG. 3 are displayed will be described in association with the steps of the above flowchart. Since no fault information is added to the monitor data displayed in the first to third rows, step 10
From 1 the process proceeds to step 102, where only the monitor data is displayed.

Since the failure information of the mounted device is set in the monitor data of the fourth stage whose time stamp display is “00” 00,
Go to 04. Since no fault information is added to the third-stage monitor data in step 104, step 10
Proceed to 5 to display the double circle mark 26, and
To display the monitor data.

The next time stamp is displayed as "00" 02.
Since the fault information of the mounted device is set in the monitor data of the fifth stage, the process proceeds from step 101 to step 104. In step 104, since the failure information is set in the fourth-stage monitor data, the process proceeds to step 106. Since the defect information set in the fourth-stage monitor data is the same as the defect information set in the fifth-stage monitor data, the process proceeds from step 106 to step 107, where the circle mark 27 is displayed. At step 102, monitor data is displayed.

Since the defect information is also set in the monitor data of the sixth row whose time stamp display is "00" 04, the process proceeds from step 101 to step 104 and step 106. Since the defect information set is not the same as the defect information set in the fifth-stage monitor data, step 106
Then, the process proceeds to step 108, where the double circle mark 26 is displayed, and monitor data is displayed in step 102. In the display of the seventh and subsequent stages, the defect information set in the same manner as the monitor data of the fifth stage is the same as the immediately preceding defect information, so that the circle mark 27 and the monitor data are displayed in combination.

When the monitor data of the fourth row is displayed, the monitor data in which the defect information is set is displayed for the first time. Therefore, the display time of the monitor data of the fourth row is set as the reference time, and the time stamp is set. The time stamp is fixed to “00” 00, and the time stamp of the monitor data of the fourth and subsequent stages indicates the elapsed time from the reference time. When the user wants to check the content of the defect information, by pressing the displayed double circle mark or circle mark, a transition screen 28 as shown in FIG. 5 is opened, and the time stamp of the pressed mark is displayed and The content of the defect information is displayed.

As described above, in the present embodiment, when the failure information of the mounted component is set in the monitor data of the operating condition output from the electronic control system, the failure information is first replaced with the immediately preceding monitor information. It is determined whether or not the information is the same as the defect information set in the data. If the information is not the same, the monitor data is displayed in combination with the double circle mark 26. If the information is the same, the circle mark is displayed. 27
Are displayed in combination. When the defect information is displayed, if the double circle mark 26 or the circle mark 27 is pressed, the defect information is displayed on the transition screen 28.

Therefore, even when the failure information of the mounted component is set and output in the monitor data, it is possible to prevent the display amount of the monitor data from decreasing. In addition, the display of the double circle mark and the circle mark makes it easy to identify the monitor data to which the defect information is added, and also allows the user to search for a point in time when the content of the defect information has changed, thereby improving convenience. I do. Furthermore, double circle mark 2
When the user presses 6 or the circle mark 27, the transition screen 28 is opened and the defect information is displayed. When the user wants to display the defect information, the defect information is clearly displayed on a large screen by a simple operation. can do.

[0036]

As described above, when the operation status data is input with the defect information of the mounted component added, the defect information is not displayed in the spreadsheet and the defect set in the operation status data is not displayed. If the information is the same as the fault information set in the driving condition data entered immediately before, the first mark is displayed in combination with the driving condition data, and if not, the second mark is combined. By displaying and displaying the defect information when the first mark or the second mark is selected, the display amount of the driving condition data is not reduced even if the defect information is added to the driving condition data. In addition, it is possible to easily search for the point in time when the content of the defect information changes.

Further, when the operating condition data to which the first mark or the second mark is added is selected, a transition screen is opened and the trouble information is displayed, so that the user desires to display the trouble information. In this case, the defect information can be clearly displayed by a simple operation.

[Brief description of the drawings]

FIG. 1 is an overall block diagram showing a configuration of an embodiment.

FIG. 2 is a block diagram showing details of a handy tester.

FIG. 3 is a diagram showing a display state of the embodiment.

FIG. 4 is a flowchart showing a part of the operation flow of the handy tester.

FIG. 5 is a diagram showing a display state of the embodiment.

FIG. 6 is a diagram showing a display state of a conventional example.

FIG. 7 is a diagram showing a display state of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Handy tester 2, 8 Communication line 3 Connector 4 Vehicle 5 Display part 6 Transmission / reception part 7A, 7B, 7C, 7D Transmission / reception part 9 Input part 10 Control part 11 Memory 21 Time stamp display part 22 Monitor item display part 23 Monitor data display Unit 24 input display unit 25 mark display unit 26 double circle mark 27 circle mark 28 transition screen

Claims (2)

[Claims] The electronic control system is connected to an electronic control system mounted on a vehicle via a communication unit, and the electronic control system transmits driving state data at predetermined time intervals and defect information of mounted parts added to the driving state data. A vehicle diagnostic handy tester that obtains the data by communication means, stores the data in a storage unit, and displays the driving condition data and the failure information of the mounted components; displaying the driving condition data on a display unit in a spreadsheet format; If the defect information of the mounted component is added to the data, and the defect information of the mounted component is the same information as the defect information of the mounted component added to the operation status data detected immediately before, the first method is performed. The mark is displayed in combination with the driving status data, and if not the same information, the second mark is displayed in combination with the driving status data, and the first mark is displayed. Mark or when the second marks are combined with the displayed operation status data is selected, Handy tester vehicle diagnostics, characterized by a display control means for displaying the trouble information. 2. The display control means opens a transition screen on a display unit when the driving condition data displayed in combination with the first mark or the second mark is selected, and displays a failure of the mounted component. The handy tester for vehicle diagnosis according to claim 1, wherein information is displayed.