JP2920174B2 - Vehicle failure diagnosis device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a failure diagnosis device for a vehicle that checks whether or not a failure has occurred in an electrical component in a vehicle.

(Prior art)

Conventionally, in a vehicle, the amount of wire harnesses becomes enormous as the number of electronic components that are electronically increased, resulting in an increase in weight and deterioration in the attachment of wiring and the like. It is known to reduce the amount of wire harness.

However, in the case of using a multi-function switch,
Only the switch functions that can be instructed by the occupants are aggregated, and the display and output of information that reports the abnormal state of the vehicle are not considered, so the amount of wire harness could not be reduced sufficiently. .

Therefore, a transparent touch switch is provided on the display screen of the display device, the information input through the touch switch is detected to control the display content of the display device, and a control signal is sent to an external device according to the input information. And display the control state of the display device in response to the control state signal of the external device, display the control state thereof, and warn of the abnormal state in response to the abnormal state detection signal given to the display device from outside. And the use of an alarm device to alert the user with an alarm sound, and time-division multiplexing of data transmission / reception between the external device and the unit integrating this switch and display reduces the amount of wire harness. Japanese Patent Application Laid-Open No. Sho 62-4658 has been proposed.

[Problems to be solved by the invention]

However, in the above conventional apparatus, the operation state of an actuator such as a pump or a solenoid is checked, and if there is an abnormality, the abnormal state is detected and a warning is issued. In this case, the operation state that can be checked is the actuator state. However, there is a problem that it is not possible to check the operation method such as speed, time delay, and the like only because of the result of turning on and off.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle failure diagnosis device that solves the above problems and that can check the reliability of the result of turning on and off the actuator and the manner of operation such as the speed and time delay of the on / off operation. To provide.

[Means for solving the problem]

In order to achieve the above object, a failure diagnosis device for a vehicle according to the present invention is a failure diagnosis device connectable to a diagnosis connector provided in a vehicle, and includes a plurality of actuators (pumps, solenoids, etc.) provided in the vehicle. A drive signal generation unit that issues a drive signal for individually driving the actuator, and an audio signal unit that emits a pseudo sound, which is an operation sound of the target actuator, as an individual audio signal in response to the drive signal to each actuator. It is provided.

[Action]

The vehicle failure diagnostic device of the present invention configured as described above is connected to a diagnostic connector provided in the vehicle by connecting to a junction box or the like, and a plurality of actuators such as a pump and a solenoid provided in the vehicle are provided. Are generated from the drive signal generation unit, and the actuator corresponding to each drive signal is driven to confirm the operation sound.

Also, in response to the drive signals to the individual actuators, the audio signal unit issues individual audio signals, which are operation sounds of the respective actuators stored in advance, and compares them with the operation sounds of the actuators. Is to check the operation.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, a failure diagnosis device 1 for a vehicle has a built-in microcomputer 2, an operation switch unit 3 for setting a failure diagnosis operation from the outside is connected to an input side of the microcomputer 2, and an output of the microcomputer 2 is provided. The driving signal generator 4, an audio signal unit including the pseudo sound generator 4 and the speaker 5, and the display 7 are connected to the side.

A connector 8 is connected to the drive signal generator 4 and is led out.

A connector 13 is connected to a junction box 10 installed in an engine room 9 and connecting a plurality of actuators such as a pump 11 and a solenoid 12 to a microcomputer (not shown) mounted on a vehicle.

When using the vehicle failure diagnosis device 1, the connector 8 of the vehicle failure diagnosis device 1 is connected to the connector 13 on the vehicle side.

FIG. 2 shows an example of the failure diagnosis device 1 for a vehicle.
There are provided a display 7 for displaying the operation state of the actuator, a display screen 13 for displaying the actuator to be driven, and a floppy drive device 14 for inserting a floppy disk programmed in advance for a diagnostic operation. Has a touch screen on switch
A switch section 3 including a switch 31, an off switch 32, and a dummy sound switch 33 is provided.

In the above-described vehicle failure diagnosis device 1, by exchanging the floppy disk, an actuator to be subjected to failure diagnosis is selected and displayed on the display screen 13, and a drive signal is generated by operating the ON switch 31, The operation is stopped by operating the off switch 32.

Further, by operating the dummy sound switch 33, a sound signal (pseudo sound) which is an operation sound of the actuator to be stored in advance is generated.

By programming a diagnosis operation for a plurality of actuators on one floppy disk, an actuator to be subjected to failure diagnosis can be selected only by operating the switch unit 3.

Next, a failure diagnosis operation will be described with reference to FIG.

When the drive test of the actuator is started, the floppy disk is replaced to select an actuator to be subjected to failure diagnosis, and the drive switch of the actuator is turned on (the on switch 31 is turned on) to drive the actuator.

When the sound produced when the actuator is activated can be confirmed, the test is terminated with no failure.

On the other hand, when it is not possible to confirm the sound emitted when the actuator is activated, the dummy sound switch 33 is operated to generate a dummy sound which is the operation sound of the target actuator from the dummy sound generator 4, and the audio signal is output from the speaker 6. Is output, and the pseudo sound is confirmed and compared with the operation sound of the actuator again.

With this configuration, it is possible to check the actual operation sound of the actuator while confirming the correct operation sound by the pseudo sound, so that the actuator operation sound can be surely confirmed.

[Effects of the Invention] The present invention is configured as described above, and has the following effects.

A drive signal generation unit issues drive signals for individually driving a plurality of actuators provided in the vehicle, and drives the actuators corresponding to each drive signal to confirm the operation sound. Correspondingly, an individual sound signal (pseudo sound) which is a pre-stored operation sound of each actuator can be issued from the sound signal section. By comparing the pseudo sound with the operation sound of the actuator, Thus, the operation sound of the actuator can be surely confirmed.

Since the actual operation sound of the actuator can be heard and confirmed while confirming the correct operation sound by the dummy sound, the operation sound of the actuator can be surely confirmed.

[Brief description of the drawings]

1 shows an embodiment of the present invention, FIG. 1 is a schematic configuration diagram, FIG. 2 is a front view showing an example of a failure diagnosis device, and FIG. 3 is a flowchart of a failure diagnosis operation. DESCRIPTION OF SYMBOLS 1 ... Vehicle failure diagnostic device, 2 ... Microcomputer, 3 ... Switch part, 4 ... Drive signal generator, 5 ... Simulated sound generator, 6 ... Speaker, 7 ... Display.

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Satoru Kawazoe 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Inside Mazda Co., Ltd. (56) References JP-A-1-168542 (JP, A) JP-A-61 -188256 (JP, A) JP-A-1-197146 (JP, A) JP-A-1-243100 (JP, A) JP-A-2-67404 (JP, U) (58) Fields investigated (Int. Cl) . ^6, DB name) B60R 6/02 650 G01M 17/60 B60S 5/00

Claims (2)

(57) [Claims] 1. A failure diagnostic device connectable to a diagnostic connector provided on a vehicle, comprising: a drive signal generating section for generating a drive signal for individually driving a plurality of actuators provided on the vehicle; And a sound signal unit for generating a pseudo sound as an operation sound of the target actuator as an individual sound signal in response to the signal. 2. When an audio signal cannot be confirmed,
2. The fault diagnosis device for a vehicle according to claim 1, wherein an audio signal is emitted by operating the switch.