JPH0767897B2 - Vehicle abnormality warning device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an abnormality warning device for a vehicle, which warns an operating state of the vehicle and an abnormality of various control devices.

[Prior Art] Conventional vehicles are equipped with various control devices that detect an operating state of the vehicle and control an internal combustion engine, a brake, a suspension, or the like. And these various control devices,
Normally, in order to improve safety, a so-called diagnosis (diagnosis) function is added to detect an abnormality that has occurred in the operating state of the vehicle or the control device, and when an abnormality is detected by this, a warning lamp etc. is turned on. The vehicle driver can be informed of that fact.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional abnormality warning, the vehicle driver visually confirms the abnormality occurrence by lighting the warning lamp or the like. It was difficult to notify the abnormality for the first time and to notify the occurrence of the abnormality promptly and surely. Particularly in recent years, various electronic devices such as radios and cassette decks have been installed in vehicles, and many indicator lamps indicating the operating states of these various electronic devices are provided near the driver's seat of the vehicle. Even if is turned on, there is a problem that it is difficult for the vehicle driver to detect the fact because it is disturbed by other display lamps.

In addition, if an abnormality is detected, it is possible to further improve safety by instructing how to handle the abnormality, that is, it is dangerous if the vehicle is not stopped, or that there is no problem in continuing driving. However, it is difficult to display such a message in the above conventional system because of the space in the vehicle. Therefore, depending on the driver, even if an abnormality is detected by a warning lamp or the like, the driver determines that he / she can travel, and continues to drive as it is, thereby further aggravating the abnormal portion.

Therefore, the present invention, when an abnormality occurs in the vehicle, can promptly and reliably notify the vehicle driver of that fact,
The present invention has been made for the purpose of providing an abnormality warning device that can easily instruct subsequent processing.

[Means for Solving Problems] That is, the structure of the present invention made to achieve the above object is as follows.
For example, as shown in FIG. 1, a plurality of control devices, each of which is connected to a common transmission line and controls various devices mounted on a vehicle, and a plurality of control devices which are respectively provided in the plurality of control devices and which include at least the various devices and An abnormality diagnosing unit for diagnosing any abnormality of each control device and transmitting an abnormality signal according to the diagnosis result to the transmission line at the time of abnormality diagnosis, and connected to the transmission line and stored in a predetermined storage medium. Connected to the transmission line, and an audio signal restoring means for restoring the audio signal included in the received audio signal or the received signal received from the externally transmitted radio wave and sending the restored audio signal to the transmission line. When an abnormal signal from the abnormality diagnosis device is received via the transmission line, a preset warning voice is generated according to the abnormal signal, and a voice signal from the voice signal restoration means is transmitted via the transmission line. A vehicle abnormality warning device is characterized by comprising: a voice generation unit that generates a voice corresponding to the voice signal when receiving the.

[Operation] As described above, in the vehicle abnormality warning device of the present invention, the plurality of control devices including the abnormality diagnosis means, the voice signal restoration means, and the voice generation means are connected to the common transmission line. ing.

Then, the audio signal restoring means restores the audio signal stored in a predetermined storage medium or the audio signal included in the reception signal received from the radio wave transmitted from the outside, and sends the audio signal to the transmission line. When receiving the voice signal sent from the voice signal restoring means via the transmission line, the voice generating means generates a voice according to the voice signal.

Further, in the control device, when the abnormality diagnosing means diagnoses an abnormality in the device controlled by the control device or the control device itself, it outputs an abnormality signal according to the diagnosis result to the transmission line. Then, when the sound generating means receives the abnormal signal via the transmission line, the sound generating means generates a preset warning sound corresponding to the abnormal signal.

Examples of the plurality of control devices that control various devices of the vehicle include an internal combustion engine control device that controls the fuel injection amount and the ignition timing of the internal combustion engine according to the operating state of the vehicle, and an automatic shift according to the operating state of the vehicle. Examples include a shift control device that controls the shift state of the machine, a brake control device that controls wheel slip that occurs during vehicle control, and the like.

Also, the abnormality diagnosis means provided in these various control devices,
Although the abnormality of various devices of the vehicle and the control device itself is detected, a conventionally well-known diagnosis function provided to the various control devices may be used for this purpose.

Next, the audio signal restoring means restores an audio signal stored in a predetermined storage medium or an audio signal included in a received signal obtained by receiving a radio wave transmitted from the outside. The means include, for example, various players that reproduce audio signals from a predetermined storage medium such as a magnetic tape or a compact disk (CD), or receive radio broadcast radio waves, communication radio waves, and demodulate the received signals. There are various electronic devices for sound generation conventionally mounted in a vehicle, such as a radio tuner for reproducing a sound signal included in a received signal and various wireless devices.

Further, when the voice generating means receives an abnormal signal from the abnormality diagnosing device, it generates a preset warning voice corresponding to the abnormal signal. A predetermined warning sound may be generated by using the technology.

Embodiments Embodiments of the present invention will be described below with reference to the drawings.

First, FIG. 2 shows the configuration of the entire signal system of various control devices and various electronic devices mounted on a vehicle to which the abnormality warning device of the present invention is applied.

As shown in the figure, in the present embodiment, as a control device for controlling the operating state of the vehicle, an internal combustion engine control device 2 for controlling the fuel injection amount, ignition timing, etc. of the internal combustion engine according to the operating state of the vehicle, and also for the vehicle A gear shift control device 4 that controls the gear shift state of an automatic transmission according to the driving state, a suspension that controls the suspension according to the load and running state of the vehicle, and controls the vehicle height, the spring constant, or the damping force of the absorber, etc. A control device 6, a brake control device 8 that controls the brake hydraulic pressure during vehicle braking, and prevents the wheels from locking at that time;
A constant speed traveling control device 10 for controlling the traveling speed of the vehicle to a set vehicle speed is provided, and each of these control devices is connected to a transmission line 12
By connecting via the, the data necessary for executing the above various controls can be exchanged between the respective control devices.

The transmission line 12 includes a radio tuner 14, a cassette deck 16, a car phone 18, a compact disc player (hereinafter referred to as a CD player) 20, and other electronic devices as sound signal restoration means that have been conventionally mounted in a vehicle. , And a voice reproducing device 24 for reading a voice signal flowing through the transmission line 12 and reproducing it by the speaker 22 is connected, and the voice signal received or reproduced by each electronic device is output to the transmission line 12 to output the voice signal. Audio reproduction device as audio generation means
It is supposed to play at 24.

Further, on the transmission line 12, a centralized input / display device 26 for operating the above-mentioned respective control devices and electronic devices and for displaying the operating state of each of these parts, and converting voices emitted by vehicle occupants into voice signals and transmitting them. A voice input device 28 for outputting to the line 12 is connected.

Here, first, the internal combustion engine control device 2 drives and controls a fuel injection valve, an igniter, an idle speed valve (ISCV) and the like provided in the internal combustion engine in accordance with the operating state of the internal combustion engine, and is supplied to the internal combustion engine. As shown in FIG. 3, it is for controlling the fuel amount (fuel injection amount), ignition timing, idle speed of the internal combustion engine, etc. Crank angle sensor interface 2a for inputting pulse signals such as cylinder discrimination signals output from the Idle switch that is ON when the throttle valve is fully closed, and Starter switch that is ON when the starter motor is operating. Input digital signal interface 2b, detection of output from various sensors that detect internal coolant temperature, intake air temperature, throttle opening, intake air amount, etc. Analog signal interface 2c for inputting signals, analog signal interface 2c
A / D converter 2d that changes an analog signal input via a digital signal, a fuel injection valve, an igniter, a drive circuit 2e that drives an actuator such as an ISCV, the internal combustion engine input via each interface described above. Based on the detection signal that represents the operating state, the control amount of the fuel injection valve, igniter, ISCV, etc. is calculated, and the control signal is output to the drive circuit 2e according to the calculation result, and the fuel injection amount, ignition timing, idle rotation It is configured as a conventionally well-known computer for engine control, which includes a CPU 2f, a ROM 2g, and a RAM 2h for controlling the number and the like.

Further, the internal combustion engine control device 2 is provided with a serial interface 2i with the transmission line 12 so that various data can be exchanged with the other control device via the transmission line 12. ing.

Then, in the internal combustion engine control device 2 of the present embodiment configured as described above, as is well known in the related art, the above-mentioned various controls are executed by the operation of the CPU 2f, and the detection from the above-mentioned various input sensors is performed. Various data such as engine speed information, water temperature information, throttle opening information, and intake air amount information obtained based on the signals are output to the transmission line 12 via the serial interface 2i and transmitted to other control devices.

Further, the internal combustion engine control device 2 becomes a control target when the detection signal from each of the above-mentioned sensors is abnormal, or the information obtained by the detection signal, that is, the operating state of the internal combustion engine is abnormal. When the operation of the actuator (here, fuel injection valve, ISCV, etc.) is abnormal, a well-known diagnosis function is added to detect such an abnormality. The warning signal is output to the transmission line 12 via the serial interface 2i.

In other words, if the cooling water temperature detected by the water temperature sensor is abnormally high, the internal combustion engine is overheated, or the drive signal system of the fuel injection valve is disconnected, and it is not possible to supply fuel to a predetermined cylinder, CPU 2f This is detected by the well-known abnormality detection processing that is executed, and a warning signal indicating that is output to the transmission line 12 by the warning signal generation processing that will be described later that is also executed by the CPU 2f.

In order to realize this warning sound generation processing, warning signal data according to various abnormal contents is recorded in the ROM 2g.

Next, the shift control device 4 is for controlling the shift state of the automatic transmission according to the operating state of the vehicle. As shown in FIG. 4, a signal from a shift position sensor for detecting the operation position of the shift lever is used. Input digital signal interface 4a,
An analog signal interface 4b that inputs the detection signal from the accelerator position sensor that detects the amount of depression of the accelerator pedal, an A / D converter 4c that converts the analog signal from this analog signal interface 4b into a digital signal,
Transmission lines from other control devices such as the internal combustion engine control device 2
A serial interface 4d for inputting various data output on 12 and for outputting various data from the transmission 4 on the transmission line 12, based on detection signals and various data input via these interfaces. CP for determining the control amount of the automatic transmission and controlling the drive of the actuators such as clutches and hydraulic control valves installed in the automatic transmission.
It is composed of U4e, ROM4f, RAM4g, drive circuit 4h, and the like.

Also in this shift control device 4, similarly to the internal combustion engine control device 2, a well-known abnormality detection process for detecting an abnormality in each of the sensors and the control system is executed.
By the warning signal generation process, a warning signal according to the abnormality content is output on the transmission line 12.

In the shift control device 4 as well, similarly to the internal combustion engine control device 2, warning signal data corresponding to the content of the detected abnormality is recorded in the ROM 4f.

Further, the shift control device 4 outputs clutch information, gear ratio information, accelerator position information and the like on the transmission line 12 via the serial interface 4d.

Next, the suspension control device 6 determines the vehicle height, the spring constant, and the
Alternatively, it controls the damping force of the absorber, and as shown in FIG. 5, a steering sensor interface 6a for inputting a detection signal from a steering sensor for detecting the steering angle of the steering wheel, a control switch used for changing the spring constant, etc. A digital signal interface 6b for inputting a signal from the vehicle, a vehicle height sensor interface 6c for inputting a detection signal from the vehicle height sensor, a serial for exchanging various data with another control device via the transmission line 12. The interface 6d includes a CPU 6e, ROM 6f, RAM 6g for performing well-known suspension control based on detection signals and various data input through these interfaces, a drive circuit 6h, and the like.

In the suspension control device 6 as well, well-known abnormality detection processing for detecting abnormality of each of the above-mentioned sensors and control system is executed, and at the time of abnormality detection, warning signal generation processing is performed on the transmission line 12 via the serial interface 6d. , A warning signal is output according to the detected abnormality content. Further, in the ROM 4f, warning voice data for issuing a warning voice is recorded as in the above control devices.

The suspension control device 6 outputs steering angle information and the like of the steering wheel.

Next, FIG. 6 shows the configuration of a brake control device 8 for preventing wheel lock that occurs during vehicle control.

As shown in the drawing, the brake control device 8 of the present embodiment is also provided with a serial interface 8a for exchanging various data with the transmission line 12 as in the above control devices. In addition to the serial interface 8a, the device also has a speed sensor interface 8b for inputting a signal from a wheel speed sensor for detecting the rotation speed of each wheel of the vehicle, a stop lamp signal and a parking brake signal indicating the operation state of the brake pedal. Digital interface 8c for inputting, CPU8d for executing well-known anti-skid control for controlling the brake hydraulic pressure of each wheel based on the detection signal and various data input through each of these interfaces to prevent wheel lock, ROM8e, A RAM 8f and a drive circuit 8g are provided.

In this brake control device 8 as well, a well-known abnormality detection process for detecting an abnormality in a sensor or a control system is executed, and at the time of abnormality detection, a warning signal is serially interfaced based on a warning signal previously recorded in the ROM 8e. Warning signal generation processing for outputting on the transmission line 12 via 8a is executed. Further, the brake control device 8 outputs vehicle speed information, brake information, and the like.

Next, FIG. 7 shows the configuration of the constant speed traveling control device 10.
As shown in the figure, the constant speed traveling control device 10 is also provided with a serial interface 10a for exchanging various kinds of data with the transmission line 12 like the above control devices. It has the same configuration as the constant speed traveling control device.

That is, in addition to the serial interface 10a, the constant speed traveling control device 10 is input via a digital signal interface 10b for inputting a signal from a control switch or a cancel switch for low speed traveling control command, and a serial interface 10b. Based on the vehicle speed information, etc., the intake control valve is driven to keep the vehicle speed constant.
CPU10c, ROM10d, RAM10 for executing well-known constant speed control
e, a drive circuit 10f, etc. are provided.

Also in the constant speed traveling control device 10, similarly to each of the control devices, a well-known abnormality detection process for detecting an abnormality in the control system is executed, and when an abnormality is detected, a serial interface 10a is generated by a warning signal generation process described later. A warning signal corresponding to the detected content is output on the transmission line 12 via. Further, in the ROM 10d, warning signal data for issuing a warning sound is recorded as in each of the above control devices.

As described above, in the present embodiment, in the abnormality detection processing executed by each of the control devices, an abnormality in the vehicle operating state or an abnormality in the sensor itself obtained by the detection signal from each sensor,
Alternatively, when an abnormality in each control system is detected, a warning signal indicating the fact is output to the transmission line 12 by the warning signal generation process.

In this warning signal generation process, as shown in FIG. 8, first, step 100 is executed to judge whether any abnormality is detected in the abnormality detection process. If an abnormality is detected, step 110 is executed. The warning signal data corresponding to the abnormality content is read from the ROM, and a warning signal corresponding to the warning signal data is output in step 120.

By the warning signal generation process, each controller can transmit the transmission line.
The warning voice output on 12 is transmitted to the voice reproducing device 24 and converted into a voice signal according to the abnormality content.

Next, FIG. 9 shows a circuit configuration of the centralized input / display device 26.

As described above, the centralized input / display device 26 is used to operate various electronic devices mounted on the vehicle such as the radio tuner 14 and the cassette deck 16 or to operate the various electronic devices based on the signal flowing through the transmission line 12. An input interface 26b for inputting an operation command from a vehicle occupant input via the operation switch 26a for displaying an operation state, etc., or outputting an operation command signal for each electronic device on the transmission line 12 or Serial interface 26c for capturing the signal flowing through the transmission line 12, CRT for displaying the operating state of each electronic device
26d, CRT control circuit 26e for driving CRT 26d, CRT controller 26f, VRAM 26g, display data ROM 26h in which display data for CRT 26d is pre-recorded, CPU 26i, ROM 26j, and RAM 26k used to drive and control each of these parts, etc. Is provided.

Next, FIG. 10 shows a circuit configuration of the voice input device 28.

This voice input device 28 is for allowing the vehicle driver to operate the above various electronic devices by voice while driving the vehicle, and converts the voice emitted by the vehicle occupant such as the vehicle driver into an electric signal and transmits it. It is configured to output on line 12.

That is, the voice input device 28 is a microphone 28a, an amplifier 28b that amplifies a voice signal emitted by the vehicle occupant converted into an analog signal by the microphone 28a, and converts the amplified voice signal into a digital signal at a predetermined sampling cycle. Low pass filter 28c, sample hold circuit 28d, A / D
A converter 28e, a clock signal generation circuit 28f, a DMA controller 28g, a serial controller 28h, and an interface 28i for reading the A / D-converted audio signal and converting it into a serial signal and outputting the serial signal onto the transmission line 12. , A CPU 28j, a ROM 28k, and a RAM 28I for controlling these units.

Then, in the CPU 28j, a voice input process for inputting the voice emitted by the vehicle occupant and outputting it on the transmission line 12 is executed in the procedure as shown in FIG.

That is, in this voice input process, first, in step 200, the microphone 2
It is determined whether the voice input is started via 8a, and the step 200 is repeatedly executed until the voice input is started, thereby waiting for the voice input. When there is a voice input, the process proceeds to the next step 210, where the voice signal converted into a digital signal by the A / D converter 28e is input and is temporarily recorded in the RAM 28I.

Next, in step 220, it is determined whether or not the voice input is completed. If the voice input is not completed, the process proceeds to the next step 230 to determine whether or not it is the sampling timing of the current audio signal. Then, if it is the current sampling timing, the process proceeds to step 210 again, and if not, the step 230 is repeatedly executed to wait for the sampling timing.

That is, in the voice input device 28, the clock signal generation circuit
At the sampling cycle determined by the clock signal from 28f, the audio signal input through the low-pass filter 28c is temporarily held in the sample hold circuit 28d, and the A / D converter
Since A / D conversion is performed by 28e, the A / D conversion value, that is, the audio signal from the A / D converter 28e is input at this sampling cycle.

When it is determined in step 220 that the voice input is completed, step 240 is executed, and step 200 is performed.
~ The audio signal read and recorded in the process of step 230 is output to the serial controller 28h to be converted into a serial signal, and information necessary for transmission (for example, address information, error detection information, etc.) is added to the signal and the transmission line is transmitted. Output to 12 above.

As described above, in the audio input device 28, the audio signal input via the microphone 28a is sampled at a predetermined sampling period and A / D converted, and the A / D converted audio signal is transmitted as a serial signal to the transmission line. It will be output on the 12th.

The audio signal output from the audio input device 28 onto the transmission line 12 is read by the various electronic devices connected via the transmission line 12 and used to drive each electronic device. That is, voice recognition is performed in each of the electronic devices, and if the voice signal output from the voice input device 28 is a voice signal representing an operation command of the electronic device, drive control corresponding to it is performed. Of. The configuration and operation of each of the above electronic devices will be described below.

First, FIG. 12 shows a circuit configuration of the automobile telephone 18.

As shown in the figure, in the car telephone 18 of the present embodiment, similarly to the conventional car telephone, the reception that demodulates the signal for the car telephone 18 from the radio wave input through the antenna sharing member 18a and converts it into a voice signal is received. Section 18b, a synthesizer section 18c and a transmitting section 18d that modulates a voice signal emitted by a vehicle occupant and a signal representing a calling telephone number and outputs the modulated signal through an antenna sharing section 18a, a receiver 18e composed of a microphone and a speaker, and a call state A display unit 18g for displaying, a transmission / reception control unit 18h for controlling the reception unit 18b and the synthesizer unit 18c, and a CPU 18i for controlling the display unit 18g and the transmission / reception control unit 18h, a ROM 18
j, RAM 18k.

In addition, the voice input device 28 can be used to talk to the car telephone 18 and operate the car telephone 18, and the voice of the other party can be output to the transmission line 12 and reproduced by the voice reproducing device 24. An amplifier 18I, a low-pass filter 18m, a sample hold circuit 18n, an A / D converter 18o, and a clock signal generation circuit 8 for A / D converting and capturing the audio signal from the section 18b.
0p, D / A converter for audio signals from the audio input device 28 to output to the synthesizer section 18c side, D / A converter 18q, low-pass filter 18r, amplifier 18s, for various data input / output control DMA controller 18t, serial controller 18u for exchanging various data with the transmission line 12, and interface 18v, the A / D converter 18o side and the D / A converter
Changeover switches 18w and 18x are provided for switching the connection between the 18h side and the transmission / reception units 18b and 18d side or the connection between the handset 18e and the transmission / reception units 18b and 18d side.

In the ROM 18j, in order to detect that the audio signal from the audio input device 28 input via the transmission line 12 is an audio signal for driving the car telephone 18, audio data representing the audio signal is detected. A formant frequency is recorded.

Then, the CPU 18i of the car telephone 18 configured in this way executes transmission / reception control based on the signal flowing through the transmission line 12.

In this transmission / reception control, as shown in FIG.
0 is executed, and it is determined whether or not the reception of the signal flowing through the transmission line 12 is completed. When the reception of the signal is completed, the next step 305 is executed to judge whether or not the read signal is the signal output from the voice input device 28.

Next, when the read signal is a voice signal output from the voice input device 28, the voice signal is stored in step 310, and then the process proceeds to step 315. Then, in step 315, the input voice signal from the voice input device 28 is subjected to fast Fourier transform, and in the next step 320, the converted voice signal is subjected to frequency analysis to extract characteristic parameters.

Next, in step 325, the extracted characteristic parameter is compared with one of the formant frequency data representing the operation command of the car telephone 18 recorded in advance in the ROM 18j, and in the next step 330, each data matches. Judge whether or not. And if each data does not match, step
335, and the processing of steps 325 and 330 above is stored in ROM18.
It is determined whether or not all the formant frequency data recorded in j are compared, and if there is any formant frequency data that is not compared, the process proceeds to step 325 again, so that the input voice signal and ROM 18j are stored. All recorded voice data representing the operation command of the car telephone 18 are compared.

Next, in step 330, when it is determined that the characteristic parameter of the audio signal from the audio input device 28 and the formant frequency data that is the audio data representing the operation command recorded in the ROM 18j match, the process proceeds to step 340. Transition. In step 340, the car telephone 18 is operated according to the content of the operation command recognized by the coincidence. That is, in the car telephone 18, as an operation command, a command for calling a telephone number, a command for ending a call, or a call device switching command for instructing whether to use the handset 18e or the voice input device 28 and the voice reproduction device 24 for a call, etc. If there is such a command, the transmission / reception control unit 18h or the changeover switch 18x,
18w is operated.

On the other hand, it is determined that the comparison between the voice signal input in step 335 and all the voice data recorded in the ROM 18j is completed, and the voice signal from the voice input device 28 is used as a command signal for operating the car telephone 18. Is not extracted, the process proceeds to step 345. And in step 345%,
It is determined whether or not a call is currently being made using the voice input device 28, and if a call is being made using the voice input device 28, the next step
350 is executed, and the audio signal stored in step 310 is output to the D / A converter 18q as it is. That is, by this, the voice signal emitted by the vehicle occupant input through the voice input device 28 is converted into an analog signal, and the synthesizer section
It will be transmitted to the car telephone line via 18c and the transmission unit 18d.

Next, when it is determined in step 305 that the signal flowing through the transmission line 12 is not the audio signal output from the audio input device 18, step 355 is executed, and whether the signal is an audio signal or not. To judge. If the signal is a voice signal, the process is terminated as it has nothing to do with the car telephone 6, otherwise, that is, if it is any control signal that is not a voice signal, it is determined in step 360. The signal is analyzed, and in step 365, the processing according to the analysis result is executed, and the processing of this routine ends.

Next, FIG. 14 shows a circuit configuration of the radio tuner 14. As is well known in the art, the radio tuner 14 of the present embodiment includes an FM tuner circuit 14a including a front end, a 1F amplifier circuit, a demodulator circuit, an MPX demodulator circuit, a front end, a 1F amplifier circuit, a demodulator circuit, etc. Consists of
An AM tuner circuit 14b, a tuner drive circuit 14c for driving each tuner circuit, a CPU 14e for controlling the drive of the tuner drive circuit 14c, a ROM 14f, and a RAM 14g are provided.

In addition, the radio tuner 14 includes the tuner circuits 14
The audio signals received and demodulated by a and 14b are output on the transmission line 12, and the audio signals from the tuner circuits 14a and 14b are amplified and A / D converted to be reproduced by the audio reproduction device 24. , An amplifier 14Ah, a low-pass filter 14i, a sample hold circuit 14j, an A / D converter 14k, and a clock signal generation circuit 14I, and for controlling the input / output of the converted audio signal and the signal flowing through the transmission line 12. A DMA controller 14m, a serial controller 14n for exchanging data with the transmission line 12, and an interface 14o are provided.

Therefore, the tuner circuit 14a or 14b is tuned in, the demodulated audio signal is converted into a digital signal in a predetermined cycle,
It is output onto the transmission line 12 via the serial controller 14n and the interface 14o.

In the CPU 14e, the signal flowing through the transmission line 12 that is input via the interface 14o and the serial controller 14n is processed to extract a command signal for operating the radio tuner 14, and tuning control is performed accordingly. In order to execute, the transmission signal processing is executed in the procedure shown in FIG.

That is, this transmission signal processing is similar to the transmission / reception control executed by the car telephone 18, and reads and analyzes the signal flowing on the transmission line 12, and if the signal is a command signal for the radio tuner operation, it is accordingly responded. It is for operating the radio tuner, and when the process starts, the first step
400 is executed to determine whether or not the reception of the signal flowing through the transmission line 12 is completed. When the reception of the signal is completed, the next step 405 is executed, and the signal is transmitted by the voice input device 28.
It is determined whether or not it is the audio signal output from.

If it is determined in step 405 that the read signal is a voice signal from the voice input device 28, step 410
And step 415 to analyze the audio signal and extract the characteristic parameters. Then, in the next step 420, the extracted characteristic parameter is compared with one of the formant frequency data representing the operation command of the radio tuner 14 which is recorded in the ROM 14f in advance, and in the subsequent step 425, it is determined whether or not they match. To judge.

If it is determined in the process of step 425 that the respective audio data do not match, the process proceeds to step 430, and whether the processes of steps 420 and 425 have been executed for all the formant frequency data recorded in the ROM 8f. Determine whether or not. Then, if the read voice signal cannot be recognized even after comparison with all the formant frequency data, the processing is ended as it is.

On the other hand, if it is determined in step 425 that the characteristic parameters of the input audio signal and the formant frequency data recorded in advance in the ROM 14f match, step 43
Go to 5. Then, in step 435, the radio tuner 14 is operated according to the recognized instruction content. That is, a control signal is output to the tuner drive circuit 14c according to a command signal from the vehicle occupant input via the voice input device 28, and tuning control is executed.

Next, in step 405 above, the input signal is the voice input device 2
If it is determined that it is not the audio signal from 8, the process proceeds to step 440. Then, in step 440, it is determined whether or not the input signal is a voice signal, and if it is a voice signal, the processing of this routine is ended as it is. If it is determined in step 440 that the input signal is not a voice signal, the process moves to the next step 445 to analyze the signal, and in the subsequent step 450, a process according to the analysis result is executed.

Next, FIG. 16 shows a circuit configuration of the CD player 20.

As shown in the figure, the CD player 20 of this embodiment has a loading motor 20b for fixing a compact disc (hereinafter referred to as CD) 30 on the turntable 20a, as in the conventional case.
And a spindle motor 2 for rotating the CD30 by rotating the solenoid 20c, the loading sensor 20d for detecting the mounting state of the CD30 on the turntable 20a, and the turntable 20a.
0e, a slider motor 20g that moves a read head 20f that radiates laser light to the CD30 and receives the reflected light in the radial direction of the CD20, drivers 20h to 20j that drive these units,
Servo control circuit 20k that executes laser beam irradiation position control (tracking control and focusing control) on the CD 30 according to the light reception signal from the read head 20f, and the light reception signal from the read head 20f obtained via the servo control circuit 20k A signal processing circuit 20l for processing various signals and extracting various control information such as audio signals and reproduction position information recorded on the CD30, and performing error correction of audio signals generated at the time of recording and reproduction according to the extracted control information. Spindle motor 2 based on control information obtained by processing circuit 20l
CLV control circuit 20m for controlling the rotation of 0e, drive control of the slider motor 20g according to the position information extracted by the commanded reproduction channel and the signal processing circuit 20l, the position of the read head 20f, and the loading sensor 20d.
Drive control of the loading motor 20b and solenoid 20c based on the detection signal from, and executes various controls for fixing the CD30 on the turntable 20a, CPU20o, ROM20p,
RAM20q, etc. are provided.

Further, the CD player 20 includes a DMA controller 20r, a serial controller 20s, and
An interface 20t is provided.

Therefore, the audio signal from the signal processing circuit 20l is directly output to the transmission line 12 via the serial controller 20s and the interface 20t by the operation of the DMA controller 20r, and is reproduced by the audio reproducing device 24.

Further, the CPU 20o processes a signal flowing through the transmission line 12 to extract a command signal for operating the CD player 20, and thereby drives and controls the CD player 20. That is, also in the CPU 20o of the CD player 20, the transmission signal processing is executed by the procedure as shown in FIG. 15 and the drive control of the CD player 20 is executed, as in the radio tuner 14.

Next, FIG. 17 shows the circuit configuration of the cassette deck 16.

As shown in the figure, in the cassette deck 16 as well, similar to the radio tuner 14, the tape running switching circuit 16
a, metal switching circuit 16b, tape running solenoid 16c
Drive circuit 16d, CPU16 for driving and controlling each of these parts
g, ROM16h, and RAM16i, the same cassette deck as the conventional one, a clock for A / D converting the audio signal recorded on the cassette tape read by the tape head 16j and outputting it on the transmission line 12. Signal generation circuit 16k, amplifier 16l,
Low-pass filter 16m, sample hold circuit 16n, A / D converter 16o, DMA controller 16p, serial controller 16
It is configured by providing q and an interface 16r.

Therefore, in the cassette deck 16, like the radio tuner 14, the audio signal read by the tape head 16j is converted into a digital signal in synchronization with the clock signal from the clock signal generation circuit 16k, and the signal is transferred to the DMA controller 1
By the operation of 6p, it is output onto the transmission line 12 via the serial controller 16q and the interface 16r.

With the CPU 16g, the radio tuner 14 and CD player 20
Similarly to the above, the cassette deck 16 is driven and controlled by a signal flowing through the transmission line 12. That is, the cassette deck
In the 16 CPU 16g, the transmission signal processing is completed by the procedure shown in FIG. 15, and the cassette deck 16 is driven and controlled by the operation command signal output from the centralized input / display device 26 or the voice input device 28. It becomes.

Next, FIG. 18 shows a configuration of the audio reproducing device 24.

The audio reproduction device 24 processes a signal flowing on the transmission line 12, and if the signal is an audio signal from a device other than the audio input device 28, is reproduced by the speaker 22.
Via the interface 24a, a serial controller 24b, and a DMA controller 24c for exchanging data between the audio reproduction device 24 and the input / output control of various data, and the interface 24a and the serial controller 24b. CPU 24d, ROM 24e, and RAM 24f for processing the input signal on the transmission line 12, and when the input signal is an audio signal from other than the audio input device 28, the audio signal is reproduced by the speaker 22. Clock signal generator circuit 24g, D / A converter 24h, low-pass filter 24i,
And an amplifier 24j.

Further, in the ROM 24e, voice data representing an operation command for driving the voice reproduction device 24, and voice data for issuing a warning voice in response to a warning signal output from each of the control devices have a formant frequency. It is recorded as data.

In the audio reproducing device 24 of the present embodiment configured in this way,
Due to the operation of the DMA controller 24c, the signal flowing through the transmission line 12 is transferred to the interface 24a and the serial controller 2
An audio signal reproduction process for processing the signal and reproducing the signal is executed by the CPU 24d. The audio signal reproducing process will be described below with reference to the flowchart shown in FIG.

When the audio signal reproduction process is started as shown in the figure, step 500 is first executed so that the signal flowing through the transmission line 12 is transferred to the RAM.
It is determined whether or not the signal is taken into 24e, that is, whether or not the reception of the signal flowing through the transmission line 12 is completed. When the reception is completed, the next step 505 is executed to judge whether or not the input signal is the warning signal output from the shift control device 4.

Next, if a negative determination is made in step 505, step 5
Moving to 10, it is determined whether or not the input signal is a warning signal output from the internal combustion engine control device 2 this time. If a negative determination is made in this processing as well, the routine proceeds to step 515, where it is determined whether or not the input signal is a warning signal from the suspension control device 6 this time.

If a negative determination is made also in this determination processing, the process proceeds to step 520. Then, in step 520, it is determined whether or not the input signal is a warning signal from the brake control device 8. If this is also the negative determination, the next step
Moving to 525, it is determined whether or not the input signal is a warning signal output from the constant speed traveling control device 10 this time.

Next, in any of the above steps 505 to 525, when a positive determination is made, that is, when an abnormality is detected in any of the plurality of control devices, step 530 is executed, and in response to the warning signal That is, a voice synthesizing process is executed in which voice data corresponding to the abnormality content detected by the control device is read from the ROM 24e, a warning voice signal is synthesized based on the voice data, and is output to the D / A converter 20h. Ie this step
The warning voice signal preset according to the abnormality content is output to the D / A converter 24h at 530, and the low-pass filter 24i and the amplifier 2
It will be reproduced by the speaker 22 via 4j.

In the steps 505 to 525, it is determined in order whether or not the input signal is a warning signal output from each control device, but this is a warning from the control device that is dangerous if an abnormality occurs. By giving priority to the signal,
This is to further improve safety.

Next, if a negative determination is made in step 525, that is, if it is determined that the input signal is not a warning signal from each of the control devices by the processing of steps 505 to 525, step 535 is executed, and this time. It is determined whether or not the input signal is the voice signal output from the voice input device 28, and if the input signal is the voice signal from the voice input device 28, the process proceeds to the next step 540.

In step 540, the input voice signal from the voice input device 28 is subjected to fast Fourier transform, and in the next step 545, the transformed voice signal is subjected to frequency analysis to extract characteristic parameters. Then, in the following step 550, the extracted characteristic parameter is compared with one of the formant frequency data representing the drive command of the sound reproducing device 24 which is recorded in the ROM 24e in advance, and it is determined in the next step 555 whether these match. That is, it is determined whether the voice uttered by the vehicle occupant is a command signal for operating the voice reproduction device 24.

Next, when it is determined that the characteristic parameter obtained by analyzing the voice signal in step 555 does not match one of the formant frequency data recorded in advance in the ROM 24e, the process proceeds to the next step 560, and the above step 550 and Step 555
Then, it is determined whether or not all the formant frequency data recorded in the ROM 24e have been compared, and if there is any formant frequency data that has not been compared, the process proceeds to step 550 again. In other words, the processing of steps 550 and 555
This is executed for all the formant frequency data recorded in the ROM 24e. And the input audio signal is not a command signal for operating the audio reproducing device 24,
If it does not match with all the formant frequency data recorded in the ROM 24e, the process of this routine is finished as it is.

On the other hand, if it is determined in step 555 that the audio signal from the audio input device 28 is a command signal for operating the audio reproduction unit 24, the process proceeds to step 565. Then, in this step 565, the sound reproducing device 24 is operated in accordance with the recognized instruction content. That is, the audio reproduction device 24
Is for reproducing an audio signal, the operation command may be, for example, an operation command for increasing or decreasing the volume to be reproduced, or an operation command for changing the sound quality to high pitch or low pitch. When such an operation command is issued, the amplification characteristic of the amplifier 24j is changed according to the command content.

Next, in step 535, when it is determined that the input signal from the transmission line 12 is not the voice signal from the voice input device 28, the process proceeds to step 570 and it is determined whether or not the input signal is the voice signal. To judge. If the input signal is an audio signal, it is output to the D / A converter 24h as it is, and the speaker 22 is caused to output an analog audio signal via the low-pass filter 24i and the amplifier 24j. That is, by this processing, the audio signal output from the device other than the audio input device 28 is reproduced as it is.

On the other hand, in step 570, if it is determined that the input signal is not the voice signal, step 580 is executed to analyze the input signal, and step 585 executes a process according to the analysis result to execute the routine of this routine. The process ends.

As described above in detail, in the present embodiment, when an abnormality is detected by various control devices such as the internal combustion engine control device 2 and the shift control device 4 mounted on the vehicle, a warning signal indicating that is detected is transmitted to the transmission line 12. It is output to the above and transmitted to the audio reproduction device 24. Then, in the audio reproducing device 24, the audio signal corresponding to the transmitted warning signal is synthesized, and the speaker 22 outputs the warning sound.

Therefore, if any abnormality occurs in the vehicle, the fact can be promptly and surely notified to the vehicle occupant. Further, since the abnormal warning is given by voice, a display device for issuing the abnormal warning is not required, and various information such as how to deal with the abnormal can be given without narrowing the vehicle space. Therefore, it is possible to improve safety as compared with the conventional warning device.

Further, the transmission line 12 is also connected to various electronic devices such as a radio tuner 14 and a cassette deck 16 as audio signal restoring means, and the audio reproducing device 24 sends an audio signal to the transmission line 12 from these electronic devices. Then, the voice signal is received and a voice corresponding to the voice signal is generated from the speaker 22. In other words, the sound reproducing device 24 of the present embodiment not only simply generates a warning sound when an abnormality occurs, but also functions as a sounding device for sound signals reproduced by various electronic devices. Therefore, it is not necessary to separately provide a device for voice generation in each of the electronic devices, and the configuration of each of the electronic devices can be simplified.

Further, in the present embodiment, the transmission line 12 is connected to various electronic devices such as the radio tuner 14 and the cassette deck 16 and the voice input device 28 for inputting the voice emitted by the vehicle occupant, and the voice emitted by the vehicle occupant is transmitted through the transmission line 12. It is transmitted to various electronic devices such as the radio tuner 14 and the cassette deck 16, and each electronic device analyzes the audio signal to recognize the drive command. For this reason, various electronic devices can be operated by the voice uttered by the vehicle occupant, and the operability is improved.

Further, in the present embodiment, since the above-mentioned respective parts are connected via the transmission line 12, many signal lines for transmitting a voice signal, control information and the like are unnecessary, and the wiring is simplified. Further, since the signal flowing through the transmission line 12 is a digital signal, it is resistant to noise from the outside, and a voice signal, control information and the like can be transmitted well.

[Effects of the Invention] As described above in detail, according to the vehicle abnormality warning device of the present invention, the abnormality diagnosis means provided in each of the plurality of control devices is used to control each control device or various devices controlled by the control device. An abnormality of the device is diagnosed, and when an abnormality occurs, an abnormality signal indicating the abnormality is output on the transmission line, and the sound generation unit generates a warning sound according to the content of the abnormality. Therefore, it is possible to promptly and reliably notify the vehicle occupant of an abnormality according to the vehicle. Further, since the warning is given by voice, it is possible to easily add information such as how to handle the abnormality to the warning voice, and further improve safety.

In addition to the control device that controls each part of the vehicle, the transmission line also restores the voice signal stored in a predetermined storage medium and the voice signal included in the received signal received from the radio wave transmitted from the outside. Means is also connected, and the voice generating means, when receiving the voice signal sent to the transmission line from the voice signal restoring means, generates the voice corresponding to the voice signal.

In other words, in the present invention, the sound generation means not only functions as a warning sound generation device corresponding to the abnormality diagnosis result by the abnormality diagnosis means, but also restores a sound signal such as a radio tuner or a cassette deck that has been conventionally mounted in the vehicle. It also functions as a sounding device for the means. For this reason, it is not necessary to separately provide a sound generating device for generating sound in such sound signal restoring means, and there is an effect that the configuration can be simplified.

Further, since all the voice signals from the voice signal restoring means and the fault signals from the fault diagnosing means provided in the various control devices are transmitted to the voice generating means through one transmission line, the warning voice Wiring inside the vehicle for sounding the sound signal reproduced and generated by the sound signal restoring means can be easily performed.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of the present invention, FIGS. 2 to 19 show an embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of the entire embodiment, and FIG. 3 is an internal combustion engine. FIG. 4 is a configuration diagram showing the configuration of a control device, FIG. 4 is a configuration diagram showing the configuration of a shift control device, FIG. 5 is a configuration diagram showing the configuration of a suspension control device, and FIG. 6 is a configuration diagram showing the configuration of a brake control device. FIG. 7 is a configuration diagram showing the configuration of a constant speed traveling control device, FIG. 8 is a flowchart showing a warning signal generation process executed by these various control devices, and FIG. 9 is a configuration of a centralized input / display device. Configuration diagram, FIG. 10 is a configuration diagram showing a configuration diagram of a voice input device,
FIG. 11 is a flow chart showing a voice input process executed by the voice input device, FIG. 12 is a configuration diagram showing a configuration of a car phone, FIG. 13 is a flow chart showing a transmission / reception control process executed by a car phone, and a 14 Figure is a block diagram showing the configuration of the radio tuner, Figure 15 is a flowchart showing the transmission signal processing executed by the radio tuner, etc., Figure 16 is a block diagram showing the configuration of the CD player, and Figure 17 is the configuration of the cassette deck. FIG. 18 is a configuration diagram showing the configuration of the audio reproducing device, and FIG. 19 is a flowchart showing the audio reproducing process executed by the audio reproducing device. 2 ... Internal combustion engine control device, 4 ... Shift control device 6 ... Suspension control device, 8 ... Brake control device 10 ... Constant speed running control device, 12 ... Transmission line 14 ... Radio tuner, 16 ... Cassette deck 18 …… Car phone, 20 …… CD player 24 …… Sound playback device

Front page continued (72) Inventor Susumu Akiyama 1-1, Showa-cho, Kariya city, Aichi prefecture, Nihon Denso Co., Ltd. (72) Inventor Katsunori Ito 1-1-1-1, Showa town, Kariya city, Aichi prefecture, Nihondenso Co., Ltd. (56) References JP-A-48-91532 (JP, A) JP-A-57-171046 (JP, A) JP-A-56-95738 (JP, A) JP-A-56-65295 (JP, A) Kai 63-53139 (JP, A) JP 61-32175 (JP, B2)

Claims (1)

[Claims] 1. A plurality of control devices, each connected to a common transmission line, for controlling various devices mounted on a vehicle; and a plurality of control devices respectively provided in the plurality of control devices. An abnormality diagnosing means for diagnosing any abnormality and transmitting an abnormality signal according to the diagnosis result to the transmission line at the time of abnormality diagnosis; and a voice signal connected to the transmission line and stored in a predetermined storage medium, Alternatively, a voice signal restoration means for restoring a voice signal included in a reception signal received from a radio wave transmitted from the outside and sending the restored voice signal to the transmission line, and the transmission line connected to the transmission line. When an abnormality signal is received from the abnormality diagnosis device via the alarm signal, a preset warning voice is generated corresponding to the abnormality signal, and the voice signal from the voice signal restoring means is received via the transmission line. Abnormality warning device of a vehicle comprising: the sound generating means for generating sounds corresponding to the audio signal.