JP2018007053A - On-vehicle equipment and processing method in on-vehicle equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide on-vehicle equipment capable of continuing a hands-free telephone conversation by detecting a failure of a built-in microphone to be used for hands-free telephone conversation.SOLUTION: The on-vehicle equipment comprises: a speaker communicably connected to a portable terminal for outputting voice information from a portable terminal as a voice; and a microphone for collecting a voice in a vehicle for transmitting the voice information to the portable terminal. The on-vehicle equipment comprises: inspection voice generation means for generating a voice for inspection of a predetermined frequency from the speaker; failure determination means for determining the presence/absence of the failure of the microphone from the voice in the vehicle collected by the microphone or the voice for inspection; and switching signal transmission means for, when it is determined that the microphone breaks down on the basis of the voice for inspection by the failure determination means, transmitting a switching signal for switching the microphone to a microphone built in the portable terminal to collect the voice in the vehicle to the portable terminal.SELECTED DRAWING: Figure 2

Description

  The present invention is communicably connected to a portable terminal and outputs a voice information from the portable terminal as a voice, a microphone that collects voice in a vehicle to transmit the voice information to the portable terminal, It is related with the vehicle equipment which has.

  2. Description of the Related Art Hands-free devices that include a microphone or the like and are connected so as to be communicable with a mobile phone or the like are known in order to make a call using a mobile phone or the like without hindering driving of the vehicle. As one of such hands-free devices, for example, an in-vehicle device having a navigation function and incorporating a microphone or the like is used.

  By the way, when a suction or spray cleaner is used for cleaning the inside of the vehicle, or when the microphone diaphragm built into the device is damaged or destroyed due to entry of foreign matter, etc., it becomes difficult to collect sound There is. In particular, there are many cases of diaphragm destruction by air blow when a spray cleaner is used in close proximity. There is a problem that the occupant is difficult to notice the failure of the microphone due to the destruction of the diaphragm, and further, it is difficult to provide an alternative means.

  In such a case, when a failure of a built-in element such as a microphone built in the in-vehicle device is detected, a speakerphone mode (a call can be made with the ears away from the mobile phone) A hands-free call device that enables a hands-free call by transmitting a signal instructing switching to a mode (for example, see Patent Document 1).

JP2013-55545A

  According to the hands-free call device disclosed in Patent Document 1 described above, when a destruction of a microphone built in an in-vehicle device is detected, a hands-free call can be made as a speakerphone mode by a mobile phone, but a vehicle collision It is a system that sometimes detects a failure of an equipment element of a vehicle, and does not mention a failure of a microphone in a normal driving state. Regarding the failure of microphones, etc., there is known a device that detects that the input voltage of the microphone continues to be constant due to the destruction of the diaphragm. For example, in the case of tone transmission such as number input according to voice guidance, etc. Since no microphone is used, detection using the input voltage is not possible.

  An object of the present invention is to provide an in-vehicle device capable of detecting a failure of a built-in microphone used for a hands-free call and continuing the hands-free call, and to apply a processing method in the in-vehicle device.

  In order to solve the above-described problem, an in-vehicle device according to the present invention is connected to a mobile terminal so as to be communicable, and outputs a voice information from the mobile terminal as voice, and transmits the voice information to the mobile terminal. A microphone for collecting the sound in the vehicle, and a test sound generating means for generating a test sound of a predetermined frequency from the speaker, and a microphone in the vehicle for collecting the sound in the vehicle. Built-in in the portable terminal when the failure determination means determines whether or not the microphone has a failure from the sound or the sound for inspection, and the failure determination means determines that the microphone is failed based on the sound for inspection Switching signal transmission for transmitting to the portable terminal a switching signal for switching the voice in the vehicle to be collected by the microphone And the step is configured to have a.

  According to such a configuration, when it is determined that the microphone of the in-vehicle device is out of order while the mobile terminal is in a hands-free call via the in-vehicle device during driving of the vehicle, the microphone of the in-vehicle device is connected to the microphone of the mobile terminal. Since a switching signal for switching to collect sound is transmitted to the portable terminal, a hands-free call can be continued. It should be noted that the sound in the vehicle is a sound such as a call of an occupant and does not include an inspection sound. The above-described inspection sound is a sound having a frequency band different from that of a call in a vehicle such as a call. The speaker is not limited to a built-in type, and may be provided on a ceiling surface, a door inner surface, or the like in the vehicle.

  In the in-vehicle device according to the present invention, when the failure determination means determines that the microphone is defective by the sound in the vehicle collected by the microphone, the inspection sound generation means generates the inspection sound. It can be set as the structure to do.

  According to such a configuration, when the microphone failure is determined by the sound in the vehicle, the sound for the inspection is further generated to determine the failure of the microphone, so that the failure determination is surely performed. Can do.

  In the in-vehicle apparatus according to the present invention, the failure determination means may be configured such that the input voltage based on the sound generated in the vehicle collected by the microphone or the sound for inspection is within a certain range for a predetermined time or more. Can be determined as a failure.

  According to such a configuration, since a microphone that has failed due to damage or the like is not vibrated by sound collection, the input voltage is constant without fluctuation. Therefore, the input voltage based on the collected sound is constant for a predetermined time or more. When it is within the range, the microphone can be determined to be faulty. However, when the input voltage due to the sound in the vehicle is within a certain range, in addition to the failure of the microphone, there may be cases where there is no call, conversation, etc. It is decided to determine the failure of the microphone. It is also possible to make a failure determination by generating a sound for inspection without determining the failure by the sound of the vehicle.

  In the vehicle-mounted device according to the present invention, the inspection sound may be a sound outside the audible range.

  According to such a configuration, it is possible to generate an inspection sound and prevent the presence or absence of a microphone failure without hindering a call or conversation of a vehicle occupant.

  The in-vehicle device according to the present invention includes a display unit that displays a predetermined image, and a display control unit that controls display of the image on the display unit, wherein the display control unit transmits the switching signal. At this time, the display unit may be configured to display the failure of the microphone and the switching to the microphone built in the portable terminal.

  According to such a configuration, when the mobile terminal is switched to the microphone, the failure of the microphone of the in-vehicle device and the switch to the microphone of the mobile terminal are displayed on the display unit, so that the vehicle occupant can be notified. it can. Thereby, the passenger | crew can take measures, such as putting a portable terminal in the position close | similar to vehicle equipment, for example.

  Further, the processing method in the in-vehicle device according to the present invention is connected to a mobile terminal so as to be communicable, and outputs a voice information from the mobile terminal as voice, and a vehicle interior for transmitting the voice information to the mobile terminal. A microphone that collects the voice of the vehicle, and a processing method for an in-vehicle device that generates a voice for testing at a predetermined frequency from the speaker; A failure determination step for determining whether or not the microphone has a failure from the voice or the inspection voice; and when the microphone is determined to be defective in the failure determination step by the inspection voice, the microphone is replaced with the mobile phone. Switching signal for switching to collect sound in the vehicle by a microphone built in the terminal A switching signal transmission step of transmitting to said portable terminal is configured to have a.

  According to the present invention, when a portable terminal using a microphone or the like of an in-vehicle device is talking in a hands-free manner, when the microphone is determined to be faulty, the microphone can be switched to the microphone of the portable terminal. You can continue to make hands-free calls without any problems.

FIG. 1 is a block diagram showing a configuration of an in-vehicle device according to the first embodiment of the present invention. FIG. 2 is a flowchart showing a processing procedure by the processing unit of the in-vehicle device shown in FIG. FIG. 3A is a display screen diagram of the display unit of the in-vehicle device indicating that the microphone is broken and switched. FIG. 3B is a display screen diagram of the display unit of the in-vehicle device showing a suspended message that cannot be transmitted. FIG. 4 is a flowchart showing a processing procedure by the processing unit of the in-vehicle device according to the second embodiment.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing the in-vehicle device according to the first embodiment of the present invention. The in-vehicle device 11 shown in FIG. 1 is an in-vehicle device having a navigation function, and is connected to the mobile terminal 31 so as to be able to communicate and enables a hands-free call. For this reason, the portable terminal 31 is previously paired with the in-vehicle device 11.

  In FIG. 1, the in-vehicle device 11 includes a processing unit 12 including computer units (for example, a CPU, a RAM, a ROM, an I / O interface, and a bus). The processing unit 12 includes an AV unit 17 capable of reproducing various sound sources and video sources (for example, CD and DVD), and a navigation unit 15 capable of navigating the host vehicle (GPS receiver, gyro sensor, acceleration sensor, etc.). Is connected. Furthermore, the processing unit 12 is a storage unit 20 (for storing various types of information such as music information and map information used in the AV unit 17 and the navigation unit 15 and various applications executed with a mobile terminal such as a smartphone described later. For example, a hard disk, a flash memory, etc.), a display unit 23 for displaying images and the like accompanying various processes constituted by an LCD, etc., and instructions necessary for various processes formed in a touch panel format on the display unit 23 are input. A possible operation unit 21 is connected. The operation unit 21 can be a push button type hard key instead of the touch panel type soft key. Further, both of a touch panel type and a push button type can be used as the operation unit 21. In addition, the processing unit 12 is connected to a BT communication unit 13 for performing short-range wireless communication (Bluetooth (registered trademark) communication) with a smartphone 31 (hereinafter simply referred to as “smartphone 31”) which is a mobile terminal. Has been. Furthermore, a speaker 26 and a microphone 27 are connected to the processing unit 12 via a voice conversion processing unit 25. As a result, a call using the smartphone 31 can be performed hands-free via the speaker 26 and the microphone 27. In addition, audio signals related to processing by the AV unit 17 and the navigation unit 15 can be output from the speaker 26 via the audio conversion processing unit 25. The speaker 26 may be built in the in-vehicle device 11 or may be provided on a wall surface such as a ceiling surface or a door of the vehicle outside the housing of the in-vehicle device 11.

  The smartphone 31 includes a BT communication unit 32 for performing short-range wireless communication with the BT communication unit 13 of the vehicle-mounted device 11 described above, a communication unit 33 for calling and connecting to the Internet, and a storage unit for storing various applications. 35, for example, a voice conversion processing unit 38 that converts voice information received by the communication unit 33 into voice and outputs the voice from the speaker 36, or converts voice collected by the microphone 37 into voice information, and a control unit that controls them 39.

  In the on-vehicle device 11 described above, for example, processing is performed in the procedure as shown in FIG. In the description of the procedure of FIG. 2, the block diagram of FIG. 1 is referred to as appropriate.

  The processing unit 12 receives an input operation from the operation unit 21 by an occupant driving a vehicle (not shown), and sets the call by the smartphone 31 to a hands-free call through the speaker 26 and the microphone 27 of the in-vehicle device 11. (S11). When the hands-free call is started, the processing unit 12 determines whether or not the input voltage of the microphone 27 is a constant value for a predetermined time or more (S12: failure determination means). For the predetermined time, for example, a range such as about 30 seconds is set in advance, and the constant value is set to a substantially constant value including a range of some fluctuations in consideration of a measurement error or the like. If the diaphragm of the microphone 27 is destroyed and fails, vibration does not occur even if the sound is collected, and the input voltage of the microphone 27 becomes a substantially constant value. For this reason, when the input voltage of the microphone 27 is a constant value for a predetermined time or more, it is possible to suspect the failure of the microphone 27 for the above reason. It is necessary to consider that the input voltage of the microphone 27 is constant even in the non-calling state.

  Therefore, when the processing unit 12 determines that the input voltage of the microphone 27 is a constant value for a predetermined time or more (YES in S12), the processing unit 12 generates a sound outside the audible range as a sound for testing at a predetermined frequency from the speaker 26. (S13: Test sound generation means). This is because it is possible to determine that the microphone 27 is out of order when an inspection sound is generated and there is no change in the input voltage of the microphone 27 due to sound collection. In addition, since the said test | inspection audio | voice is an audio | voice of a frequency band more than what is called a mosquito sound, it can determine without affecting a passenger | crew's telephone call etc.

  The processing unit 12 determines whether or not the input voltage of the microphone 27 is a constant value for a predetermined time or more after the above-described inspection sound is generated (S14: failure determination means). When the processing unit 12 determines that the input voltage of the microphone 27 is not a constant value for a predetermined time or longer (NO in S14), it is determined that the microphone 27 has not failed, and the input of the microphone 27 in the hands-free conversation state is repeated. It is repeatedly determined whether or not the voltage is a constant value for a predetermined time or more (S12 to S14).

  When the processing unit 12 determines that the input voltage of the microphone 27 is a constant value for a predetermined time or more even after the above-described inspection sound is generated (YES in S14), the processing unit 12 can recognize that the microphone 27 is out of order. Then, as shown in FIG. 3A, the processing unit 12 indicates that the built-in microphone (microphone 27) of the navigation device that is the in-vehicle device 11 is defective on the screen of the display unit 23, and that the smartphone 31 is connected to the microphone 37. The contents of switching and placing the smartphone 31 in a position where the passenger can easily speak are displayed (S15: display control means). This is because the microphone 31 of the in-vehicle device 11 is switched to the microphone 37 of the smartphone 31 to collect the occupant's call, so the smartphone 31 is arranged near the occupant.

  As shown in FIG. 3B, the processing unit 12 cannot send a call to the other party of the call, taking into account the case where the smartphone 31 is placed in the inner pocket of the driving passenger and cannot be taken out immediately. It is possible to display an input screen that indicates whether or not the transmission of the message is necessary (S15: display control means) and transmit the message based on a touch input operation to the operation unit 21. Then, the processing unit 12 transmits a switching signal for switching from the microphone 27 of the in-vehicle device 11 to the microphone 37 of the smartphone 31 to the BT communication unit 32 of the smartphone 31 through the BT communication unit 13 (S16: switching signal transmission unit). . The smartphone 31 that has received the switching signal through the BT communication unit 32 sets the microphone 37 to collect the occupant's call and continues the occupant's hands-free call.

  As described above, according to the in-vehicle device 11 according to the present embodiment, the failure of the microphone 27 of the in-vehicle device 11 can be detected on the spot when a call by the smartphone 31 is performed by the in-vehicle device 11 in a hands-free manner. In addition, since a switching signal is transmitted, it is possible to switch to the microphone 37 of the smartphone 31, so that a hands-free call can be continued without requiring an occupant's operation.

  Next, a processing procedure performed by the in-vehicle device according to the second embodiment of the present invention will be described with reference to FIG. Since the configuration of the in-vehicle device is the same as that of the first embodiment shown in FIG. 1, the same name and the same symbol are used. Further, in the description of the processing procedure, the points different from the first embodiment will be mainly described.

  The processing unit 12 receives an input operation of the operation unit 21 by an occupant and activates double zone communication, which is a call between the front seat and the rear seat using the microphone 27 of the in-vehicle device 11 (S21). In the double zone communication, for example, a voice of a passenger in the driver's seat is collected by the microphone 27 of the in-vehicle device 11 and output from a speaker (not shown) in the rear seat.

  When the double zone communication is started, the processing unit 12 determines whether or not the input voltage of the microphone 27 is a constant value for a predetermined time or more (S22: failure determination means). If the processing unit 12 determines that the input voltage of the microphone 27 is a constant value for a predetermined time or more (YES in S22), the processing unit 12 generates a sound outside the audible range as a sound for testing at a predetermined frequency from the speaker 26 (S23). : Inspection sound generation means). The processing unit 12 determines whether or not the input voltage of the microphone 27 is a constant value for a predetermined time or more after the generation of the inspection sound (S24: failure determination means), and the input voltage of the microphone 27 is predetermined. If it is determined that the value is not constant over the time (NO in S24), it is determined that the microphone 27 has not failed and it is repeatedly determined whether the input voltage of the microphone 27 is constant over a predetermined time (S22 to S24). ).

  When the processing unit 12 determines that the input voltage of the microphone 27 is a constant value for a predetermined time or longer after the inspection sound is generated (YES in S24), the processing unit 12 determines whether or not there is a currently communicable smartphone (S25). When the processing unit 12 determines that there is a smartphone 31 that is paired with the in-vehicle device 11 and capable of wireless communication in the vehicle (YES in S25), the processing unit 12 displays the on-vehicle device 11 on the display screen of the display unit 23 of the in-vehicle device 11. A message indicating that the built-in microphone of the navigation device, which is the device 11, is malfunctioning, switching the smartphone 31 to the microphone 37, and placing the smartphone 31 in a position where the occupant can easily speak is displayed (S26: display control means). ).

  Then, the processing unit 12 transmits a switching signal for requesting switching from the microphone 27 of the in-vehicle device 11 to the microphone 37 of the smartphone 31 to the smartphone 31 through the BT communication unit 13 (S27: switching signal transmission means). The smartphone 31 that has received the switching signal by the BT communication unit 32 sets the microphone 37 to collect the call of the occupant. At this time, the processing unit 12 reduces the volume of the speaker 26 of the in-vehicle device 11 which is the speaker of the front seat of the audio and further increases the effect of the sound collection by the microphone 37 of the smartphone 31 and further the speaker of the rear seat (not shown). Decrease the volume. If it is determined that there is no smartphone 31 or the like that can be wirelessly communicated with the in-vehicle device 11 in the vehicle (NO in S25), since there is no microphone to be switched, communication with the voice is ensured. Therefore, the volume of the speaker 26 of the in-vehicle device 11 that is the front seat speaker of the audio is reduced as much as possible (or set to mute), and the volume of the rear seat speaker (not shown) is further reduced as much as possible (S28).

  As described above, in the present embodiment, when the double zone communication between the front seat and the rear seat using the in-vehicle device 11 is in operation, the microphone 27 built in the in-vehicle device 11 breaks down due to destruction of the diaphragm or the like. However, when there is a smartphone 31 or the like that can communicate with the in-vehicle device 11, it is possible to quickly detect the failure and switch the smartphone 31 to the microphone 37, so that the double zone communication can be continued without any trouble. . In the first and second embodiments, the in-vehicle device 11 and the smartphone 31 can communicate with each other by short-range wireless by Bluetooth (registered trademark) connection, but the present invention is not limited to this, and other wireless Connection may be used, or wired connection such as USB may be used.

  As described above, according to the present invention, when a mobile terminal using a microphone or the like of an in-vehicle device is talking hands-free, the microphone is switched to the microphone of the mobile terminal when it is determined that the microphone is out of order. Therefore, the occupant can continue to make a hands-free call. Therefore, the mobile terminal is communicably connected to the speaker, and the mobile terminal outputs voice information from the mobile terminal. It is useful as an in-vehicle device having a microphone that collects voice in the vehicle in order to transmit voice information.

DESCRIPTION OF SYMBOLS 11 In-vehicle apparatus 12 Processing unit 13 BT communication part 15 Navigation unit 17 AV unit 20 Storage part 21 Operation part 23 Display part 25 Audio | voice conversion process part 26 Speaker 27 Microphone 31 Smartphone (smart phone)
32 BT communication unit 33 communication unit 35 storage unit 36 speaker 37 microphone 38 voice conversion processing unit 39 control unit

Claims (6)

A vehicle-mounted device that is communicably connected to a portable terminal and that outputs a voice information from the portable terminal as voice, and a microphone that collects voice in the vehicle to transmit the voice information to the portable terminal Because
Inspection sound generating means for generating inspection sound of a predetermined frequency from the speaker;
Failure determination means for determining whether or not there is a failure of the microphone from the sound in the vehicle collected by the microphone or the sound for inspection;
When the failure determination means determines that the microphone is failed based on the inspection sound, a switching signal for switching so that the sound in the vehicle is collected by the microphone incorporated in the mobile terminal Switching signal transmission means for transmitting to the vehicle-mounted device.   2. The vehicle-mounted device according to claim 1, wherein when the failure determination unit determines that the microphone has failed due to the sound in the vehicle collected by the microphone, the inspection sound generation unit generates the inspection sound. machine.   The failure determination means determines that the microphone is defective when an input voltage based on a sound collected in the vehicle collected by the microphone or a sound for the inspection is within a certain range for a predetermined time or more. Or the vehicle-mounted device according to 2.   The in-vehicle device according to claim 1, wherein the inspection sound is a sound outside an audible range. A display unit for displaying a predetermined image; and display control means for controlling display of the image on the display unit;
5. The in-vehicle device according to claim 1, wherein the display control unit displays a failure of the microphone and a switch to a microphone built in the portable terminal when the switching signal is transmitted. A vehicle-mounted device that is communicably connected to a portable terminal and that outputs a voice information from the portable terminal as voice, and a microphone that collects voice in the vehicle to transmit the voice information to the portable terminal A processing method in which
A test sound generation step for generating a test sound of a predetermined frequency from the speaker;
A failure determination step of determining the presence or absence of a failure of the microphone from the in-vehicle sound collected by the microphone or the inspection sound;
A switching signal for switching to collect sound in the vehicle by using a microphone incorporated in the portable terminal instead of the microphone when the microphone is determined to be defective in the failure determination step by the inspection sound. A switching signal transmission step of transmitting to the portable terminal.

Images