WO2016088323A1

WO2016088323A1 - Emergency report apparatus

Info

Publication number: WO2016088323A1
Application number: PCT/JP2015/005813
Authority: WO
Inventors: 俊宏細井; 信一横井
Original assignee: 株式会社デンソー
Priority date: 2014-12-04
Filing date: 2015-11-23
Publication date: 2016-06-09

Abstract

In this emergency report apparatus (7) for a vehicle, diagnostic data is modulated using a predetermined diagnostic modulation method involving a diagnostic carrier wave, and a diagnostic electric signal is output to a voice output device (3) (S30), said diagnostic carrier wave having a carrier frequency that is set so as to be included in a frequency range detectable by an on-board voice input device (2) but not included in a voice band. An electric signal of input voice detected by the voice input device is demodulated using a predetermined diagnostic demodulation method at a demodulator (15) in order to generate demodulated data. Whether or not data that matches the diagnostic data is included in the demodulated data is determined (S50).

Description

Emergency call device

Cross-reference of related applications

This application is based on Japanese Application No. 2014-246145 filed on Dec. 4, 2014 and Japanese Application No. 2015-191433 filed on Sep. 29, 2015. Is used.

This disclosure relates to an emergency report device (Emergency report apparatus) that makes an emergency call when an emergency occurs in a vehicle.

Conventionally, an emergency call center via a wide-area wireless communication network (for example, a mobile phone communication network) in order to allow a vehicle occupant to make a call with an operator of an emergency call center when an emergency occurs in the vehicle. There is known an emergency call device configured to perform data communication with (see, for example, Patent Document 1).

However, in an emergency situation where the vehicle is damaged, the speaker mounted on the vehicle may break down. If the speaker breaks down, the vehicle occupant cannot make a call with the operator of the emergency call center. In order to suppress the occurrence of such a situation, a backup speaker is installed in addition to the main speaker that is normally used. If the main speaker breaks down, the voice from the operator of the emergency call center is output from the backup speaker. Techniques for making them known are known.

As a method for diagnosing a speaker failure, a method is known in which a diagnostic sound such as a DTMF (Dual-Tone Multi-Frequency) sound is output from a speaker and the diagnostic sound is detected by a microphone.

JP 2013-055545 A

In the method of outputting diagnostic sound such as DTMF sound from the speaker, the diagnostic sound is heard by the vehicle occupant, which may cause discomfort to the vehicle occupant.

This disclosure is intended to make it difficult for a vehicle occupant to feel uncomfortable when diagnosing a speaker mounted on a vehicle.

A first example of the present disclosure is an emergency call device that is mounted on a vehicle and performs wireless data communication so that a call can be made between a vehicle occupant and an emergency call center when an emergency situation occurs in the vehicle. And a modulation unit, a demodulator, and a diagnostic data determination unit.

The modulation unit is set in advance using a diagnostic carrier wave having a carrier frequency set in advance so as to be included in the frequency range detectable by the voice input device mounted on the vehicle and not included in the voice band. The diagnostic data set in advance is modulated by the diagnostic modulation method. The modulation unit outputs a diagnostic electrical signal, which is an electrical signal obtained by modulating the diagnostic data, to an audio output device that is mounted on the vehicle and outputs audio. The demodulator demodulates an input audio electrical signal, which is an audio electrical signal representing the audio detected by the audio input device, by a preset diagnostic demodulation method, and generates demodulated data obtained by demodulating the input audio electrical signal. The diagnostic data determination unit determines whether or not the demodulated data generated by the demodulator includes data that matches the diagnostic data.

The emergency notification device of the first example can output the diagnostic sound represented by the electrical signal for diagnosis from the audio output device mounted on the vehicle by outputting the electrical signal for diagnosis to the audio output device. And the emergency notification apparatus of a 1st example can judge that the audio | voice output device has not failed, when the audio | voice input device mounted in the vehicle detects this diagnostic sound. Whether or not the voice input device has detected a diagnostic sound can be determined by whether or not the demodulated data includes data that matches the diagnostic data.

In the emergency notification device of the first example, the diagnostic electrical signal output to the audio output device is modulated using a diagnostic carrier wave having a carrier frequency set so as not to be included in the voice band. Signal. For this reason, when the audio output device outputs a diagnostic sound represented by the electrical signal for diagnosis, the diagnostic sound has a frequency that is not included in the audio band, so that it is difficult for the vehicle occupant to hear. Thereby, when making a diagnosis of the audio output device, it is possible to make it difficult for the vehicle occupant to feel uncomfortable.

Furthermore, since the component having a carrier frequency in the electrical signal for diagnosis is used as a carrier wave, its output level can be reduced. For this reason, when diagnosing an audio output device, it is possible to further reduce discomfort for the vehicle occupant.

A second example of the present disclosure is an emergency call device that is mounted on a vehicle and performs wireless data communication so that a call can be made between a vehicle occupant and an emergency call center when an emergency situation occurs in the vehicle. In addition, a notification sound output unit and a notification sound determination unit are provided.

The notification voice output device notifies the occupant that the emergency call center is being called when the emergency call device is calling the emergency call center so that a call can be made between the occupant and the emergency call center. The voice electrical signal representing the call alerting voice is output to a voice output device that is mounted on the vehicle and outputs the voice. The notification sound determination unit determines whether or not the call notification sound is included in the sound detected by the sound input device mounted on the vehicle.

The emergency call device of the second example can output the call notification voice from the voice output device mounted on the vehicle by outputting a voice electric signal representing the call notification voice to the voice output device. And the emergency notification apparatus of a 2nd example can judge that the audio | voice output device has not failed, when the audio | voice input device mounted in the vehicle detects this call alerting | reporting audio | voice.

This call notification sound is for notifying passengers that the emergency call center is being called, and does not cause discomfort to vehicle passengers. For this reason, the emergency call device of the second example can make it difficult for the passengers of the vehicle to feel uncomfortable when diagnosing the audio output device mounted on the vehicle.

The above and other objects, features, and advantages of the present disclosure will become more apparent from the following detailed description with reference to the accompanying drawings.
The block diagram which shows the structure of the emergency call system of 1st Embodiment. The flowchart which shows the speaker diagnostic processing of 1st Embodiment. The block diagram which shows the structure of the emergency call system of 2nd Embodiment. The flowchart which shows the speaker diagnostic process of 2nd Embodiment

(First embodiment)
Hereinafter, a first embodiment of the present disclosure will be described with reference to the drawings. The emergency call system 1 is mounted on a vehicle and includes a microphone 2, a main speaker 3, a backup speaker 4, an audio device 5, an emergency call switch 6, and an emergency call device 7, as shown in FIG. “Emergency call” may be indicated as ER in the figure.

The microphone 2 is for inputting voice and is installed in the passenger compartment. The microphone 2 converts the input sound into an electrical signal (hereinafter referred to as a sound electrical signal) and outputs it. The main speaker 3 and the backup speaker 4 are for outputting sound and are installed in the vehicle interior. The main speaker 3 and the backup speaker 4 convert the input audio electric signal into audio and output it.

The audio device 5 includes an AM / FM tuner and a CD player, and outputs audio electric signals generated by the AM / FM tuner and CD player. The audio device 5 includes an external input terminal, and outputs an audio electrical signal input from the external input terminal.

The emergency call switch 6 is a switch operated by an occupant of the vehicle when making an emergency call, and is installed in the passenger compartment. The emergency call device 7 includes a wireless communication device 11, a sound processor 12, a sound band filter 13, a carrier band filter 14, a demodulator 15, a modulator 16, an amplifier 17,

changeover switches

18 and 19, and a controller 20.

The wireless communication device 11 performs wireless data communication with an emergency call center (not shown) via a wide area wireless communication network (for example, a mobile phone communication network). The sound processor 12 generates sound data by converting the sound electrical signal input from the microphone 2 into a digital signal, and outputs the sound data to the wireless communication device 11. The audio processor 12 generates audio electrical signals by converting the audio data input from the wireless communication device 11 into analog signals, and outputs the audio electrical signals to the amplifier 17.

The audio band filter 13 removes components other than the audio band (in this embodiment, 50 Hz to 18 kHz) from the audio electric signal input from the microphone 2 and outputs the result to the audio processor 12. The carrier band filter 14 removes components other than the carrier band (in this embodiment, 20 Hz to 50 Hz and 18 kHz to 20 kHz) from the audio electrical signal input from the microphone 2 and outputs the result to the demodulator 15.

The demodulator 15 demodulates the audio electrical signal input from the carrier band filter 14 by a preset demodulation method for diagnosis, and outputs the demodulated data generated by the demodulation to the controller 20. “Diagnosis” is to determine whether the target device is normal or malfunctioning.

The modulator 16 is generated by modulating the speaker diagnosis digital data preset for speaker diagnosis by a preset modulation method for diagnosis (for example, AM modulation, FM modulation, etc.). An electric signal is output to the amplifier 17. The modulator 16 modulates the digital data for speaker diagnosis using a carrier wave having a carrier frequency (in this embodiment, for example, 19 kHz) preset so as to be included in the carrier wave band.

The amplifier 17 amplifies and outputs the signals input from the audio processor 12 and the modulator 16. The changeover switch 18 includes

connection terminals

31, 32, and 33. The connection terminal 31 is connected to the output terminal of the amplifier 17, the connection terminal 32 is connected to the changeover switch 19, and the connection terminal 33 is connected to the backup speaker 4. The changeover switch 18 is connected to the first connection state in which the connection terminal 31 and the connection terminal 32 are connected, and in the second connection in which the connection terminal 31 and the connection terminal 33 are connected, according to the switching signal output from the controller 20. Switch to either state.

The changeover switch 19 includes

connection terminals

41, 42, and 43. The connection terminal 41 is connected to the main speaker 3, the connection terminal 42 is connected to the connection terminal 32 of the changeover switch 18, and the connection terminal 43 is connected to the output terminal of the audio device 5. And according to the switching signal output from the controller 20, the changeover switch 19 is in the third connection state in which the connection terminal 41 and the connection terminal 42 are connected, and in the fourth connection in which the connection terminal 41 and the connection terminal 43 are connected. Switch to either state.

The controller 20 is also referred to as a controller or an electronic control unit. In this embodiment, for example, a known microcomputer including a CPU, a ROM, a RAM, an I / O, a bus line for connecting these configurations, and the like is taken as an example. It is configured. The controller 20 controls the wireless communication device 11, the modulator 16, and the changeover switches 18 and 19 by the CPU executing a process based on the program stored in the ROM. Further, as described above, each function performed by the controller 20 is realized based on a program, and part or all of the function can be realized as a component of hardware.

Further, an emergency call switch signal indicating whether or not the emergency call switch 6 has been operated is input to the controller 20 from the emergency call switch 6. The controller 20 receives an airbag deployment signal from an airbag device (not shown).

In the emergency call system 1, the emergency call device 7 causes the wireless communication device 11 to execute an emergency call when a preset emergency call start condition is satisfied. The emergency call start condition of the present embodiment is that at least one of the following first start condition and second start condition is satisfied. The first start condition is that the emergency call switch 6 is operated. Whether or not the emergency call switch 6 has been operated is determined based on an emergency call switch signal from the emergency call switch 6. The second start condition is that an airbag deployment signal is input to the controller 20.

The emergency call is a process of reporting vehicle position information indicating the current position of the vehicle to the emergency call center by the wireless communication device 11 and between the vehicle occupant and the operator of the emergency call center by wireless data communication of the wireless communication device 11. And a process for making a telephone call.

The emergency call device 7 obtains the voice spoken by the vehicle occupant with the microphone 2 and outputs the voice uttered by the operator of the emergency call center from the main speaker 3 or the backup speaker 4 so that the vehicle occupant is hands-free. It is possible to make a phone call.

In addition, the controller 20 of the emergency call device 7 executes speaker diagnosis processing. Here, the procedure of the speaker diagnosis process will be described using the flowchart of the speaker diagnosis process of FIG. This speaker diagnosis process is started immediately after the emergency call device 7 is activated.

The flowchart described in this specification includes a plurality of sections (or referred to as steps), and each section is expressed as, for example, S10. Further, each section can be divided into a plurality of subsections, while a plurality of sections can be combined into one section. Each section can be referred to as a device, module, unit, or unique name (eg, a detection section as a detection device, detection module, detection unit, or detector). In addition, as described above, the section includes not only (i) a software section combined with a hardware unit (eg, a computer), but also (ii) hardware (eg, an integrated circuit, a wiring logic circuit). ) Sections can be implemented with or without the associated device functions. Furthermore, the hardware section can be included inside the microcomputer.

When the speaker diagnosis process is executed, as shown in FIG. 2, the controller 20 first determines in S10 whether or not the emergency call start condition is satisfied. If the emergency call start condition is not satisfied (S10: NO), the process of S10 is repeated to wait until the emergency call start condition is satisfied. When the emergency call start condition is satisfied (S10: YES), in S20, a switching signal instructing the first connection state is output to the changeover switch 18, and a switching signal instructing the third connection state is output in the changeover switch 19. Output to. Thereby, the changeover switch 18 is in a state where the connection terminal 31 and the connection terminal 32 are connected. The changeover switch 19 is in a state where the connection terminal 41 and the connection terminal 42 are connected. The changeover switch 18 is set so as to be in the first connection state immediately after the emergency call device 7 is activated. The changeover switch 19 is set to be in the fourth connection state immediately after the emergency call device 7 is activated.

In S30, the electric signal generated by modulating the digital data for speaker diagnosis is output to the modulator 16. As a result, audio representing the speaker diagnosis digital data is output from the main speaker 3.

In S40, the demodulated data is acquired from the demodulator 15. In S50, it is determined whether or not the demodulated data includes speaker diagnosis digital data. If the demodulated data includes speaker diagnosis digital data (S50: YES), the speaker diagnosis process is terminated. Thereby, when a call is performed between the vehicle occupant and the operator of the emergency call center by wireless data communication of the wireless communication device 11, the voice uttered by the operator of the emergency call center is output from the main speaker 3.

On the other hand, if the demodulated data does not include digital data for speaker diagnosis (S50: NO), a switching signal for instructing the second connection state is output to the changeover switch 18 in S60. Thereby, the changeover switch 18 is in a state where the connection terminal 31 and the connection terminal 33 are connected. For this reason, when a call is made between the vehicle occupant and the operator of the emergency call center by wireless data communication of the wireless communication device 11, the voice uttered by the operator of the emergency call center is output from the backup speaker 4.

The emergency call device 7 is mounted on a vehicle and performs wireless data communication so that a call can be made between the vehicle occupant and the emergency call center when an emergency occurs in the vehicle.

The emergency call device 7 uses a carrier wave (hereinafter referred to as a diagnostic carrier wave) having a carrier frequency set in advance so as to be included in the frequency range detectable by the microphone 2 mounted on the vehicle and not included in the voice band. Then, the preset digital data for speaker diagnosis is modulated by the preset diagnostic modulation method (S30). Then, the emergency call device 7 outputs an electrical signal (hereinafter referred to as a diagnostic electrical signal) obtained by modulating the digital data for speaker diagnosis to the main speaker 3 that is mounted on the vehicle and outputs sound (S30).

Further, the demodulator 15 of the emergency call device 7 demodulates a voice electrical signal (hereinafter referred to as an input voice electrical signal) representing the voice detected by the microphone 2 using a preset diagnostic demodulation method, and the input voice electrical signal. Demodulated data is generated by demodulating. Then, the emergency call device 7 determines whether or not the demodulated data generated by the demodulator 15 includes data that matches the speaker diagnosis digital data (S50).

The emergency call device 7 can output a diagnostic sound represented by the diagnostic electrical signal from the main speaker 3 mounted on the vehicle by outputting the electrical signal for diagnosis to the main speaker 3. And the emergency call apparatus 7 can judge that the main speaker 3 is not out of order by the microphone 2 mounted in the vehicle detecting this diagnostic sound. Whether or not the microphone 2 has detected a diagnostic sound can be determined based on whether or not the demodulated data includes data that matches the digital data for speaker diagnosis.

In the emergency call device 7, the diagnostic electrical signal output to the main speaker 3 is a signal modulated using a carrier wave having a carrier frequency set so as not to be included in the voice band. For this reason, when the main speaker 3 outputs a diagnostic sound represented by an electrical signal for diagnosis, the diagnostic sound has a frequency that is not included in the voice band, so that it is difficult for the vehicle occupant to hear. Thereby, when diagnosing the main speaker 3, it can be made difficult to give discomfort to the vehicle occupant.

Furthermore, since the component having a carrier frequency in the electrical signal for diagnosis is used as a carrier wave, its output level can be reduced. For this reason, when the diagnosis of the main speaker 3 is performed, it is possible to further reduce discomfort for the vehicle occupant.

By the way, in situations where the vehicle is damaged, acoustic noise from around the vehicle may increase. For this reason, there is a possibility that the diagnostic sound cannot be detected by the microphone due to the influence of the acoustic noise.

On the other hand, the emergency call device 7 uses a carrier frequency (19 kHz in this embodiment) outside the acoustic noise band (ie, 18 kHz to 20 kHz). For this reason, when diagnosing the main speaker 3, the influence of acoustic noise can be suppressed.

Moreover, the main speaker 3 and the backup speaker 4 are mounted on the vehicle. Then, the changeover switch 18 of the emergency call device 7 selects and switches either the main speaker 3 or the backup speaker 4 as an output destination of the audio electrical signal representing the voice received from the emergency call center.

As a result, when the main speaker 3 is found to be out of order, the output destination of the audio / electrical signal can be switched to the backup speaker 4, so that the vehicle occupant can talk to the operator of the emergency call center. It is possible to suppress the occurrence of a situation where it becomes impossible.

In the above embodiment, the process of S30 of the controller 20 is a modulation unit or device, the process of S50 is a diagnostic data determination unit or device, the microphone 2 is an audio input device, the main speaker 3 and the backup speaker 4 are audio output devices, and switching. Switch 18 is also referred to as a selector.

(Second Embodiment)
Hereinafter, a second embodiment of the present disclosure will be described with reference to the drawings. In the second embodiment, parts different from the first embodiment will be described.

As shown in FIG. 3, the emergency notification system 1 of the second embodiment includes a point that the carrier band filter 14, the demodulator 15 and the modulator 16 are omitted, and a noise canceller 24, a detector 25 and a dial tone output device 26. The added point is different from the first embodiment in that the speaker diagnosis process is changed.

The noise canceller 24 removes a noise component from the audio electrical signal input from the microphone 2 and outputs it to the detector 25. The detector 25 detects a dial tone, which will be described later, included in the signal input from the noise canceller 24, and outputs a dial tone detection signal indicating that to the controller 20 when a dial tone is detected.

When the dial tone output command from the controller 20 is input, the dial tone output device 26 recognizes to the vehicle occupant that the emergency call device 7 is calling the emergency call center via the wide area wireless communication network. A voice electric signal representing a dial tone to be generated is generated, and the voice electric signal is output to the amplifier 17. The controller 20 continues to output a dial tone output command while calling the emergency call center. The dial tone of the present embodiment is a signal having a preset dial tone frequency so as to be included in the voice band.

The amplifier 17 amplifies and outputs signals input from the sound processor 12 and the dial tone output device 26. The speaker diagnosis process of the second embodiment is a process that is repeatedly executed during the operation of the emergency call apparatus 7.

When the speaker diagnosis process of the second embodiment is executed, the controller 20 first activates an effective time timer in S110 as shown in FIG. In S120, similarly to S10, it is determined whether or not an emergency call start condition is satisfied. If the emergency call start condition is not satisfied (S120: NO), the process of S120 is repeated to wait until the emergency call start condition is satisfied. When the emergency call start condition is satisfied (S120: YES), in S130, a switching signal for instructing a connection state corresponding to the connection state set value is output to the changeover switch 18, and a switch for instructing the third connection state. The signal is output to the changeover switch 19. The connection state setting value is set to 1 or 2, for example. When the connection state setting value is 1, the first connection state is instructed. When the connection state setting value is 2, the second connection state is instructed. Note that the initial value of the connection state setting value is 1, and the connection state setting value is set in S180 described later.

In S140, it is determined whether or not a preset valid determination time has elapsed since the previous speaker diagnosis was executed. In the present embodiment, the effective determination time is, for example, 30 minutes. Specifically, it is determined that the determination effective time has elapsed when the value of the effective time timer is equal to or greater than the value corresponding to the determination effective time.

Here, when the effective determination time has not elapsed (S140: NO), the speaker diagnosis process is temporarily terminated. On the other hand, when the effective determination time has elapsed (S140: YES), it is determined whether or not a dial tone has been detected in S150. Specifically, it is determined whether or not a dial tone detection signal is input from the detector 25 while the emergency call device 7 is calling the emergency call center. Then, when the dial tone detection signal is input, it is determined that the dial tone is detected. When the dial tone detection signal is not input, it is determined that the dial tone is not detected.

In S160, it is determined whether or not a dial tone is detected based on the determination result in S150. Here, when a dial tone is detected (S160: YES), the speaker diagnosis process is temporarily ended. On the other hand, when the dial tone is not detected (S160: NO), a switching signal for instructing a connection state different from S130 is output to the changeover switch 18 in S170. In S180, the connection state setting value is changed. Specifically, when the connection state setting value is set to 1, the connection state setting value is set to 2, and when the connection state setting value is set to 2, the connection state setting value is set to 2. Set to 1. Further, in S190, the effective time timer is reset, that is, the value of the effective time timer is set to 0, and the speaker diagnosis process is temporarily ended.

In this emergency call device 7, the dial tone output device 26 calls the emergency call center when the emergency call device 7 calls the emergency call center so that a call can be made between the passenger and the emergency call center. A sound electric signal representing a dial tone for notifying the passenger that the vehicle is in the vehicle is output to the main speaker 3 that is mounted on the vehicle and outputs sound. The emergency call device 7 determines whether or not a dial tone is included in the voice detected by the microphone 2 mounted on the vehicle (25, S150, S160).

The emergency call device 7 can output a dial tone from the main speaker 3 mounted on the vehicle by outputting a sound electric signal representing the dial tone to the main speaker 3. And the emergency call apparatus 7 can judge that the main speaker 3 is not out of order by the microphone 2 mounted in the vehicle detecting this dial tone.

This sound is for notifying passengers that the emergency call center is being called, and does not cause discomfort to the passengers of the vehicle. For this reason, the emergency call apparatus 7 can make it difficult to give discomfort to the vehicle occupant when the main speaker 3 is diagnosed.

Also, in the emergency call device 7, the noise canceller 24 removes noise components contained in the voice detected by the microphone 2. As a result, the emergency call device 7 suppresses the occurrence of a situation in which the dial tone included in the voice detected by the microphone 2 cannot be detected due to noise generated in the passenger compartment and around the vehicle. The diagnostic accuracy of the main speaker 3 can be improved.

In the above embodiment, the dial tone output device 26 is a notification voice output device, the processing of S150 and S160 of the detector 25 and the controller 20 is a notification voice determination unit or device, the dial tone is a call notification voice, and the noise canceller 24 is a noise remover. Also referred to as a vessel.

(Modification 1)
For example, in the above-described embodiment, the vehicle in which one backup speaker 4 is mounted is shown, but a plurality of backup speakers 4 may be mounted. In this case, the changeover switch 18 may select and switch any one of the main speaker 3 and the plurality of backup speakers 4 as the output destination of the audio electric signal. As a result, the controller 20 outputs a switching signal to the changeover switch 18, thereby outputting an electrical signal for diagnosis from one main speaker 3 and a plurality of backup speakers 4 to the changeover switch 18. The destinations can be selected and switched sequentially. The controller 20 can specify a normal speaker by outputting a diagnostic electrical signal to each of the main speaker 3 and the plurality of backup speakers 4. Thereafter, the controller 20 causes the selector switch 18 of the emergency call device 7 to select the specified normal speaker as the output destination of the audio electrical signal representing the voice received from the emergency call center. As a result, it is possible to suppress the occurrence of a situation in which the vehicle occupant cannot make a call with the operator of the emergency call center.

(Modification 2)
In the above embodiment, the modulator 16 outputs the diagnostic electrical signal to the amplifier 17. However, the diagnostic electrical signal may be output to the audio device 5. As a result, it is possible to output from the main speaker 3 a sound in which another sound (for example, guidance sound, progress tone) output from the audio device 5 and the diagnostic sound are synthesized. In this way, not only when an emergency situation occurs, but also when an audio device is incorporated in the vehicle at the time of vehicle manufacture, or when the main speaker 3 is actually playing music, a diagnostic sound is generated. By outputting from the main speaker 3, a failure diagnosis of the main speaker 3 can be performed. In addition, since the diagnostic sound is modulated using the carrier wave having the carrier frequency set so as not to be included in the voice band as described above, it is difficult for the occupant of the vehicle to hear the diagnostic sound. For this reason, the diagnostic sound can minimize the influence on the sound quality of the sound synthesized with the diagnostic sound. The voice synthesized with the diagnostic sound does not affect the diagnostic sound.

(Modification 3)
Moreover, although the said embodiment showed what diagnoses the failure of the main speaker 3 by speaker diagnosis processing, you may make it perform failure diagnosis of the microphone 2 with the method similar to speaker diagnosis processing. That is, when the speaker diagnosis digital data is not included in the demodulated data in S50 of the speaker diagnosis process (S50: NO), it may be determined that a failure has occurred in the microphone 2. Thereby, when the backup microphone is mounted on the vehicle, it is possible to switch to the backup microphone when a failure occurs in the microphone 2.

(Modification 4)
Moreover, in the said 2nd Embodiment, in order to perform a speaker diagnostic process, what output the dial tone for making the passenger | crew of a vehicle recognize that it is calling the emergency call center was shown. However, it is not limited to such a dial tone. For example, to alert the occupant that the emergency call center is being called, such as a guidance voice such as “I will start calling now”. Any audio is acceptable.

Although the present disclosure has been described with reference to the embodiments, it is understood that the present disclosure is not limited to the embodiments and structures. The present disclosure includes various modifications and modifications within the equivalent range. In addition, various combinations and forms, as well as other combinations and forms including only one element, more or less, are within the scope and spirit of the present disclosure.

Claims

An emergency call device (7) that is mounted on a vehicle and performs wireless data communication so that a call can be made between an occupant of the vehicle and an emergency call center when an emergency occurs in the vehicle,
Preliminary setting using a diagnostic carrier wave having a carrier wave frequency set in advance so as to be included in the frequency range detectable by the voice input device (2) mounted on the vehicle and not included in the voice band An audio output device that modulates preset diagnostic data using the diagnostic modulation method and outputs an audio signal mounted on the vehicle and outputs a diagnostic electric signal that is an electric signal obtained by modulating the diagnostic data. A modulation unit (S30) that outputs to 3);
A demodulator (15) that demodulates an input audio electrical signal, which is an audio electrical signal representing the audio detected by the audio input device, using a preset demodulation method for diagnosis, and generates demodulated data obtained by demodulating the input audio electrical signal. )When,
An emergency notification device comprising: a diagnostic data determination unit (S50) that determines whether or not the demodulated data generated by the demodulator includes data that matches the diagnostic data.
The vehicle is equipped with a plurality of audio output devices (3, 4),
The emergency according to claim 1, further comprising: a selector (18) that selects and switches any one of the plurality of voice output devices as an output destination of a voice electric signal representing voice received from the emergency call center. Notification device.
An emergency call device (7) that is mounted on a vehicle and performs wireless data communication so that a call can be made between an occupant of the vehicle and an emergency call center when an emergency occurs in the vehicle,
In order to notify the occupant that the emergency call center is being called when the emergency call device is calling the emergency call center so that a call can be made between the occupant and the emergency call center A voice output signal (26) that outputs a voice electrical signal representing the call notification voice of the voice to a voice output unit (3) that is mounted on the vehicle and outputs the voice;
An emergency call determination unit (25, S150, S160) for determining whether or not the call notification voice is included in the voice detected by the voice input device (2) mounted on the vehicle. apparatus.
The vehicle is equipped with a plurality of audio output devices,
The emergency according to claim 3, comprising a selector (18) for selecting and switching any one of the plurality of voice output devices as an output destination of a voice electric signal representing the voice received from the emergency call center. Notification device.
The emergency call device according to claim 3 or 4, further comprising a noise remover (24) that removes a noise component included in the voice detected by the voice input device.