JP3931697B2 - Abnormality diagnosis device for guidance system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an abnormality diagnosis apparatus for a guidance system that determines the presence or absence of an abnormality of a voice output means in a guidance system that guides predetermined information to an operator using voice and images in a vehicle or the like.
[0002]
[Prior art]
In recent years, vehicle guidance systems such as a car navigation system and a parking assistance system have been installed in vehicles. Such a guidance system is usually configured to present predetermined information to a driver using voice and images, or to prompt an operator to input.
[0003]
In such a system, if there is an abnormality in the sound output means and the image display means, there is a problem that information cannot be properly displayed to the operator and appropriate input cannot be obtained. Therefore, a means for determining an abnormality in the sound output means and the image display means is required.
[0004]
[Problems to be solved by the invention]
In particular, in a vehicle, the driver is required to visually check the surrounding situation and the like, so it is often preferable to perform guidance by voice rather than image display. The audio output means is required to function normally. The abnormality of the image display means is easily recognized by the driver, and it is relatively easy to incorporate the abnormality determination in the image display means itself. On the other hand, it is difficult for the driver to recognize the abnormality of the voice output means, and it is expensive to detect an abnormality such as a broken cone paper of the speaker in hardware.
[0005]
Therefore, an object of the present invention is to provide an abnormality diagnosis device for a guidance system that can determine an abnormality of a voice output means with a simple configuration at low cost.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, an abnormality diagnosis apparatus for a guidance system according to the present invention is an apparatus for diagnosing an abnormality in a guidance system that guides predetermined information by a display means and a voice output means. An abnormality diagnosis unit is provided for determining whether there is an abnormality, and the abnormality diagnosis unit determines whether a predetermined operation according to the audio output content urged by using the audio output means matches a predetermined operation by the operator. The input content match determination is performed, and if it is determined that the input content match is determined to be matched, it is determined that the voice output means is normal, and the input content match determination is determined to match. If not, prompts a predetermined operation according to the presence / absence of audio output using the display means, performs the audio output presence / absence determination to determine the presence / absence of audio output according to the predetermined operation by the operator, and outputs the audio Presence or absence By If it is determined that there audio output is again performed entries match determination, if it is determined that there is no audio output by the audio output existence determination are those determined as the audio output means is abnormal .
[0007]
Performs audio output, prompts the operator to perform a predetermined operation according to the content or presence, and performs an abnormality diagnosis in software without adding an apparatus for detecting an abnormality by observing the operation result Therefore, it is possible to perform abnormality diagnosis at a low cost with a simple configuration.
[0008]
This guidance system includes an input means, and the predetermined operation is preferably an operation of the input means. Since it is not necessary to provide a signal input terminal dedicated to abnormality detection, the configuration can be simplified. It is further preferable that the input means and the display means are a display device with a touch panel.
[0009]
It is preferable that the abnormality diagnosis unit performs abnormality diagnosis prior to the operation of the guidance system. By performing abnormality diagnosis before the operation of the guidance system, normal operation of the guidance system is guaranteed. This guidance system may be part of a vehicle travel support system. Moreover, it is preferable that the abnormality diagnosis unit determines that the sound output unit is abnormal when the input content match determination is performed a plurality of times and the sound output is not determined to be normal continuously a plurality of times.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a block diagram showing a guidance system (parking support system) including an abnormality diagnosis apparatus according to the present invention.
[0011]
This parking assistance system 10 supports movement to the target parking position set by the driver by automatic steering, and performs guidance for setting the target parking position and information guidance for the driver at the time of movement by image and voice. It is. The parking assist ECU 1 that is a control unit also serves as an abnormality diagnosis unit of the guidance system according to the present invention. The parking support ECU 1 includes a touch panel display (hereinafter simply referred to as a display) 2 that also serves as an input unit and a display unit, a speaker 3 that is an audio output unit, and a steering angle of the vehicle based on an instruction from the parking support ECU 1. The automatic steering device 4 to be changed, the vehicle speed sensor 5 for detecting the vehicle speed, the steering angle sensor 6 for detecting the current steering angle, the rear camera 7 for capturing an image (video) behind the vehicle, and the steering torque are detected. A steering torque sensor 8 is connected.
[0012]
In the parking support process in the parking support system 10, first, the driver operates the touch panel of the display 2 to shift to the parking support process mode, and the video behind the vehicle captured by the rear camera 7 is confirmed on the display 2. Meanwhile, the target parking position is set by operating the touch panel. At this time, it is preferable to guide the setting method and operation by voice from the speaker 3 or display of characters and graphics on the display 2.
[0013]
When the target parking position is set and the driver sets the shift lever to reverse, releases the brake pedal, and moves the vehicle backward, the vehicle moves along the route to the set target parking position. Thus, the automatic steering device 4 sets the steering angle based on an instruction from the parking assist ECU 1. At this time, the route setting and the current position are calculated based on the outputs of the vehicle speed sensor 5, the steering angle sensor 6, and the steering torque sensor 8. At this time, it is preferable to increase the torque of the engine because the vehicle speed range that the driver can operate with only the brake pedal is expanded and the vehicle speed can be easily adjusted.
[0014]
When the target parking position is reached, the display 2 and the speaker 3 inform the driver that the vehicle has arrived, and prompt the user to finish the parking support process. In addition, when it is impossible to set a route to the set target parking position, or when the vehicle has stopped for a long time during the process, it is preferable to prompt the driver to stop the parking support process using the display 2 and the speaker 3.
[0015]
In this parking assistance system 10, the determination process which determines the abnormality of the speaker 3 is performed prior to the setting of the target parking position. Hereinafter, the determination process will be specifically described. This determination process is performed by the parking assist ECU 1 that also serves as an abnormality determination unit.
[0016]
FIG. 2 is a flowchart illustrating an example of the determination process. First, in step S1, the operation content is notified by the display 2 and the speaker 3, and “Please press this button when you cannot hear the sound” is displayed on the display 2 together with the button.
[0017]
In step S2, it is determined whether or not an operation of a button set to perform an operation when no sound is heard is performed. If the set button is not pressed, an audio output from the speaker 3 is performed. It determines with it being normal, transfers to step S3, and starts the parking assistance process mentioned above.
[0018]
On the other hand, if a button set to perform an operation when no sound is heard is pressed in step S2, it is determined that the sound output from the speaker 3 is abnormal, and the process proceeds to step S4. The display 2 notifies the driver that the audio output is abnormal, and the process ends without shifting to the parking support process.
[0019]
As described above, abnormalities in the speaker 3 (including abnormalities in the audio output system) are determined by the driver's operation, so that it is not necessary to add special detection means, and abnormalities can be detected in software. Means can be configured.
[0020]
FIG. 3 is a flowchart illustrating another example of the determination process. First, in step S11, the operation content of the touch panel is instructed by the speaker 3 only by voice. At this time, ten-key buttons “0” to “9” are displayed on the display 2, and the speaker 3 instructs “Please press“ 5 ”when you hear sound”. Here, it is preferable that the input content when the voice is heard is randomly changed for each process.
[0021]
In step S12, the variable i for recording the number of determinations is reset to the initial value 0. In step S13, it is determined whether or not the input content instructed by voice matches the content input from the touch panel by the driver. If they match, it is determined that the sound output from the speaker 3 is normal, the process proceeds to step S14, the process ends, and the process proceeds to the parking support process. If they do not match, the process proceeds to step S15.
[0022]
In step S15, 1 is added to the variable i for recording the number of determinations. In step S15, i is compared with a threshold i _th . When i is less than the threshold value i _th , the process proceeds to step S17 to display on the display 2 that the input content is different from the voice instruction, and press the corresponding button depending on whether or not the voice is heard. indicate. In step S18, it is determined which button has been selected. If the button indicating that the sound has been heard is selected, the process returns to step S13 to make a determination again. If the button indicating that the user has not heard is pressed, the process proceeds to step S19. If i is greater than or equal to the threshold i _th in step S16, the process directly proceeds to step S19.
[0023]
When the process proceeds to step S19, it is determined that the audio output system is abnormal, the display 2 notifies the driver that the audio output is abnormal, and the process ends without proceeding to the parking support process. To do.
[0024]
In the case of this determination process, it is determined to be normal only when a button that matches the voice instruction is pressed, so that it is possible to prevent an erroneous determination due to a driver's operation error or the like even though the voice output system is abnormal. And even if the driver presses the wrong button, it is possible to continue the unnecessary re-operation by checking whether the driver can hear the voice while allowing the re-operation until a predetermined number of times. It is possible to suppress and reliably and quickly perform abnormality determination.
[0025]
In the above description, the example in which the determination process is performed separately from the parking support process has been described, but the determination process may be performed as part of the initial process of the parking support process. For example, a button to be selected when voice is not heard at the time of setting the parking assistance mode is displayed (corresponding to step S1), or the selection process of the parallel parking and the parallel parking which are selection items when setting the parking assistance mode is performed. Voice guidance may be used (corresponding to step S11). In addition, here, the determination is made based on the operation result of the touch panel operation that is an input unit, but the determination may be performed according to other operations such as a shift operation and various switch operations.
[0026]
The parking assist system described above includes an automatic steering device. However, the present invention can also be applied to a parking assist system in which steering is performed by a driver and guidance of movement to a target parking position is provided by voice and image display. It is.
[0027]
The abnormality diagnosis device for a guidance system according to the present invention is not limited to the parking support system described above, and is mounted on a vehicle such as a travel support system such as an automatic travel device that automatically adjusts the speed and a car navigation device. It can be applied to a system that presents information to the driver and guides the operation. Moreover, it is applicable also to the guidance system mounted in vehicles other than a vehicle.
[0028]
【The invention's effect】
As described above, according to the present invention, the abnormality of the voice output system can be determined in software by detecting the driver's operation according to the presence or absence of the voice output. Therefore, it is possible to determine the abnormality of the audio output system with a simple configuration without providing any special abnormality detection means.
[Brief description of the drawings]
FIG. 1 is a block configuration diagram showing a guidance system including an abnormality diagnosis apparatus according to the present invention.
FIG. 2 is a flowchart illustrating an example of abnormality diagnosis processing in the guidance system of FIG.
FIG. 3 is a flowchart showing another example of abnormality diagnosis processing in the guidance system of FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Parking assistance ECU, 2 ... Display with a touch panel, 3 ... Speaker, 4 ... Automatic steering device, 5 ... Vehicle speed sensor, 6 ... Rudder angle sensor, 7 ... Rear camera, 8 ... Steering torque sensor, 10 ... Parking assistance system.

Claims (6)

An apparatus for diagnosing an abnormality in a guidance system that guides predetermined information by display means and voice output means,
An abnormality diagnosis unit for determining whether there is an abnormality in the sound output means,
The abnormality diagnosis unit
Performing an input content match determination for determining whether a predetermined operation according to the audio output content prompted using the audio output means matches a predetermined operation by the operator,
If it is determined by the input content match determination that it matches, it is determined that the voice output means is normal,
If it is not determined that the input contents match, the display means is used to prompt a predetermined operation according to the presence or absence of voice output, and a voice is output according to a predetermined operation by the operator. Make a voice output presence / absence judgment
If it is determined that there is audio output by the audio output presence / absence determination, the input content match determination is performed again,
An abnormality diagnosis apparatus for a guidance system that determines that the sound output means is abnormal when it is determined that there is no sound output by the sound output presence / absence determination .   2. The abnormality diagnosis apparatus for a guidance system according to claim 1, wherein the guidance system includes an input unit, and the predetermined operation is an operation of the input unit.   The abnormality diagnosis apparatus for a guidance system according to claim 2, wherein the input means and the display means are display devices with a touch panel. The abnormality diagnosis device for a guidance system according to any one of claims 1 to 3, wherein the abnormality diagnosis unit performs an abnormality diagnosis prior to the operation of the guidance system.   The abnormality diagnosis device for a guidance system according to claim 4, wherein the guidance system is a part of a vehicle travel support system. The abnormality diagnosis unit performs the input content match determination a plurality of times, and determines that the sound output unit is abnormal when the sound output is not determined to be normal continuously a plurality of times. The abnormality diagnosis device for a guidance system according to any one of claims 5 to 6.

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