JP2008210221A - Car room acoustic state adjustment system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a car room acoustic state adjustment system capable of more properly adjusting sounds in a car room. <P>SOLUTION: A car room acoustic state adjustment system 1 directly receives radio information for caution against crossings, which a motor vehicle 10 coming within a prescribed distance from a crossing 20 can receive, from the crossing 20 and, on this reception, changes operation states of in-vehicle electronic apparatuses 300 and 400 from those before approach to the crossing to outdoor sound hearing support operation states. The system returns operation states of in-vehicle electronic apparatuses 300 and 400 to those before approach to the crossing of the motor vehicle 10 in accordance with a reception state of the radio information for caution against crossings. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle interior acoustic state adjustment system.

JP-A-2005-31038 Japanese Patent Laid-Open No. 2002-236023

  In recent years, it has become common to travel while listening to radio broadcasts and music data while the vehicle is traveling. Furthermore, recently, in-vehicle navigation devices have become widespread, and it is common to travel while listening to voice guidance on routes. For this reason, the user tends to keep the interior of the vehicle in a highly quiet state such that the power window is always fully closed so that the sound generated in the interior of the vehicle is easier to hear. On the other hand, it is important to avoid danger by listening to the sound generated outside the vehicle while driving the vehicle. In response to these, Patent Document 1 and Patent Document 2 include navigation and in-vehicle accessories that automatically adjust the sound output in the passenger compartment when the vehicle travels in a specific place, and reduces complicated sound adjustment operations by the user. A technique related to a device control method is disclosed. In particular, when a vehicle approaches a specific point (such as a railroad crossing), there is a disclosure of a technique for appropriately adjusting the volume and quality of audio and controlling opening / closing of a power window.

  Both of these technologies use the function of the navigation device, and when the current position of the vehicle approaches a specific point that requires acoustic adjustment within a specified distance, acoustic adjustment is performed. To do.

  However, in this case, the acoustic state does not return to the state before adjustment unless the specified distance is exceeded even if the vehicle passes a specific point. In particular, there are traffic jams around the railroad crossings, and there is a possibility that if the traffic is involved in the traffic jams, it will not easily exceed the specified distance even after passing through the railroad crossings. At this time, the situation where it is difficult to hear the playback sound of radio broadcast / music data and the guidance sound of the navigation device in the vehicle continues. In such a case, the user must return to the pre-adjustment state by his / her own operation. There was a problem of lack of sex.

  The subject of this invention is providing the vehicle interior acoustic state adjustment system which can perform the acoustic adjustment of a vehicle interior more appropriately.

Means for Solving the Problems and Effects of the Invention

In order to solve the above problems, the vehicle interior acoustic state adjustment system of the present invention is
A crossing caution radio information sending means for wirelessly sending a crossing caution radio information that is provided at a crossing and that can be received by a vehicle approaching within a predetermined distance with respect to the crossing;
A crossing caution radio information receiving means provided in a vehicle for receiving crossing caution radio information;
It is provided in advance in the automobile, and it becomes easy to listen to the sound outside the vehicle from the operating state before approaching the railroad crossing, with the reception of the radio information on the railroad crossing warning as an opportunity. Vehicle outside sound listening support means for changing to a defined vehicle outside sound listening support operation state;
A level crossing crossing completion state determining means for determining a level crossing crossing completion state of the vehicle based on a reception state of the crossing warning radio information provided in the vehicle,
Electronic device operation state return means provided in the automobile and returning the operation state of the electronic device to the operation state before approaching the crossing of the vehicle when it is determined that the crossing has been completed.
It is characterized by providing.

  According to the above configuration of the present invention, when the vehicle approaches within a predetermined distance with respect to the level crossing, the vehicle directly receives the level crossing warning radio information from the level crossing. Can be changed to the outside sound listening support operation state. Furthermore, the operation state of the in-vehicle electronic device can be returned to the operation state before the vehicle approaches the crossing according to the reception state of the crossing warning radio information. As a result, it is possible to detect the approach and separation of the vehicle to the railroad crossing in a more direct form, so that the transition to the outside sound listening support operation state of the in-vehicle electronic device and the return to the previous state can be performed conventionally. Can also be performed at an appropriate timing.

  Further, the vehicle can be provided with a level crossing approach state determination unit that determines that a level crossing approaching state is detected when the reception level of the level crossing warning wireless information exceeds a predetermined threshold level. At this time, the vehicle outside sound listening support means can set the operation state of the electronic device to the vehicle outside sound listening support operation state when it is determined that the crossing is approaching. Since reception of crossing caution radio information below a certain level may be noise or the like, according to this configuration, it is possible to accurately detect approach and departure of a vehicle to and from a railroad crossing without the influence of such noise and the like.

  The level crossing caution radio information transmitting means may be a beacon transmitter that wirelessly transmits level crossing caution radio information using light or radio waves as a medium, and the vehicle level crossing caution radio information receiving means may be a beacon receiver. According to this configuration, the vehicle crossing caution radio information receiving means receives road traffic information from a VICS (Vehicle Information and Communication System) center by optical beacon or radio beacon, or receives FM multiplex broadcasting. Since it can also be used as an in-vehicle beacon receiver, it can be realized at low cost by providing a beacon transmitter on the railroad crossing side without providing any additional equipment.

  On the other hand, an ETC vehicle-mounted device that is used in an automatic toll collection system for vehicles and that can communicate wirelessly with an ETC roadside device is provided on the vehicle, and on the other hand, a radio information sending means for crossing warning at a railroad crossing can be received by the ETC vehicle-mounted device. It is also possible to wirelessly transmit crossing warning radio information. According to this configuration, the vehicle crossing caution radio information receiving means can be used also as the receiver of the ETC on-board unit, so that only the crossing caution radio information sending means corresponding to the ETC is compatible with ETC. Can be realized at low cost without providing additional equipment.

  The vehicle crossing warning radio information receiving means includes a first receiving means and a second receiving means provided on the rear side in the vehicle length direction of the automobile from the first receiving means. be able to. Then, at this time, the crossing completion state determination means is a reception level for determining a comparison between the reception level of the crossing caution radio information by the first reception means and the reception level of the crossing caution radio information by the second reception means. A comparison / determination unit may be provided to determine that the vehicle is in a crossing completion state when the reception level of the second reception unit is higher than the reception level of the first reception unit. As a result, the crossing completion state of the automobile can be accurately determined at an early stage according to the receiving means that receives the crossing warning radio information. Thereby, the operation state of the in-vehicle electronic device can be promptly restored from the outside sound listening support operation state to the previous state after passing the railroad crossing.

  The crossing caution radio information receiving means provided separately before and after the vehicle can be applied to the above-described beacon and ETC receivers, but can also be applied to the ID code receiving means in the smart entry system. Specifically, a vehicle is wirelessly received by an ID code receiving means provided on the door of each seat, and a master code stored in the ID code is transmitted from a portable communication device. A smart entry system that matches a code and permits a predetermined vehicle operation based on a result of the comparison is provided. The crossing caution radio information is wirelessly transmitted in a receivable form, and the vehicle crossing caution radio information receiving means is also used as the ID code receiving means. According to this configuration, it is possible to realize at low cost without providing any additional equipment only by using the crossing warning radio information transmitting means of the crossing as an information transmitting means that can be received by the ID code receiving means of the smart entry system.

  In this configuration, the ID code receiving means corresponding to the front seat can be defined as the first receiving means, and the ID code receiving means corresponding to the rear seat can be determined as the second receiving means. As a result, it is possible to quickly and accurately determine the state of completion of the crossing of the automobile according to the reception state of each receiving means, so that the operation state of the in-vehicle electronic device is immediately supported after passing the crossing. It is possible to return from the state to the previous state.

  An electronic device whose operation state can be set to the outside sound listening support operation state can be a plurality of power windows provided in the automobile. In this case, the vehicle outside sound listening support means can be configured to change to the vehicle outside sound listening support operation state in which the open area of the power window is larger than that before approaching the railroad crossing, triggered by reception of the crossing warning radio information. According to this configuration, since the power window is opened in the outside sound listening support operation state, it is easier to hear the outside sound.

  On the other hand, the electronic device whose operation state can be set to the outside sound listening support operation state can be an audio device provided in an automobile. In this case, the outside sound listening support means is configured to change the operation state of the audio device to the outside sound listening support operation state whose volume is lower than that before approaching the crossing, triggered by reception of the crossing warning radio information. it can. According to this configuration, the volume of the audio device is reduced in the outside sound listening support operation state, so that it is easier to hear the outside sound.

  In addition, when the crossing warning radio information is received, the vehicle is visually informed of the approach of the vehicle to the crossing before the outside sound listening support means is changed to the outside sound listening support operation state. Crossing approach warning means for warning by voice information or a combination thereof can be provided. As a result, an approach warning to the crossing is given, so that the driver is conscious of the sound outside the vehicle and can easily recognize the crossing warning sound. In addition, it is no longer possible to misrecognize the vehicle outside sound listening support operation state as a failure of the vehicle. In addition, when the vehicle is determined to be in a crossing crossing completion state by the crossing crossing completion state determination unit, a crossing separation notifying unit that notifies the crossing crossing completion may be provided.

  Further, the vehicle is provided with vehicle speed detection means for detecting the vehicle speed of the vehicle, and the vehicle speed detected by the vehicle speed detection means is in a state where the vehicle outside sound listening support means has received the crossing warning radio information and the vehicle speed detection means has a predetermined speed. When it falls below, it can comprise so that a change to an external sound listening assistance operation state may be performed. According to this configuration, the change to the outside sound listening support operation state can be performed at a more appropriate timing.

  In addition, the vehicle is provided with a brake operation detecting means for detecting the presence or absence of the brake operation of the automobile, and when the vehicle outside sound listening support means receives the crossing warning radio information and the brake operation is detected. It can also be configured to change to the outside-sound listening support operation state. Even in this configuration, the change to the outside-sound listening support operation state can be performed at a more appropriate timing.

  The vehicle has an outside sound listening support operation state storage means for storing the setting contents of the outside sound listening support operation state, and a change input for changing the setting content of the outside sound listening support operation state of the electronic device by a user operation. Based on the received outside-sound listening support operation state setting change input unit and the received outside-sound listening support operation state change input, the setting contents of the outside-sound listening support operation state stored in the support operation state storage means A vehicle outside sound listening support operation state changing means to be changed can be provided. According to the said structure, it becomes possible to set an external sound listening assistance operation state according to a user preference. Specifically, if the target electronic device is a power window, specify the power window to be opened in the outside sound listening support operation state, the opening of the power window in the outside sound support operation state, etc. If the target electronic device is an audio device, it is possible to set the volume setting in the outside sound listening support operation state.

  Note that the in-vehicle display device can also be used as a navigation device display device or an in-vehicle meter display device. The outside-sound listening support operation state setting change input unit can be configured as a touch switch that is provided on the screen of the in-vehicle display device and performs a predetermined input by a touch operation on the screen.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram schematically illustrating a vehicle interior acoustic state adjustment system according to an embodiment of the present invention, and FIG. 2 is a block diagram of the vehicle interior acoustic state adjustment system.

  The vehicle interior acoustic state adjustment system 1 includes a railroad crossing 20 that outputs an alarm sound, and a vehicle control device 100 (see FIG. 2) provided in an automobile (hereinafter abbreviated as a vehicle) 10 that passes across the track 2 of the railroad crossing 20. For example).

  As shown in FIG. 1, the railroad crossing 20 is provided on both the first side (20 a) and the second side (20 b) so as to straddle the track 2. The railroad crossings 20a and 20b are crossing caution radio information transmitting units (crossing caution radio information transmitting means) 21a and 21b that wirelessly transmit crossing caution radio information that can be received by vehicles approaching within a predetermined distance from the railroad crossings 20a and 20b, Alarm sound output units 22a and 22b that output an alarm sound when approaching and circuit breakers 23a and 23b are provided.

  On the other hand, the vehicle control device 100 of the vehicle 10 is configured as microcomputer hardware in which a CPU, ROM, RAM, nonvolatile memory (for example, EEPROM) 100a, an input / output unit, a communication interface, and the like are connected by an internal bus. As shown in FIG. 2, a vehicle speed sensor 101 that detects the vehicle speed of the host vehicle and a brake sensor 102 that detects the presence or absence of the brake operation of the host vehicle are connected to the vehicle control device 100 via an input / output unit. The detection results of the sensors 01 and 102 are received and connected to a serial communication bus (CAN, LIN, etc.) via a communication interface. The audio output device 103 connected to the serial communication bus, power window control The device (P / W control device) 104, the main panel 105 provided in the instrument panel of the vehicle, the navigation device 106, the meter ECU 107, and the smart entry control device 110 are configured to be able to communicate with each other. In addition, the non-volatile memory stores an outside-sound listening support program, which will be described later, and setting information that determines the outside-sound listening support operation state of the electronic device involved in the vehicle interior acoustic state.

  The vehicle 10 wirelessly receives the vehicle-specific ID code transmitted from the wireless portable key (portable communication device) 120, collates the ID code with the master code stored in itself, and based on the collation result The smart entry system 200 (see FIG. 3) that permits predetermined vehicle operation is mounted, and the smart entry control device 110 is a control entity of the smart entry system 200 shown in FIG. is there.

  The smart entry system 200 of FIG. 3 is provided corresponding to each front and rear seat of the vehicle, and each receiver 11 that receives a radio signal from the wireless portable key 120, and smart entry control to which each receiver 11 is connected. Device 110, each transmitter 12 connected to smart entry control device 110, body ECU 500, each seat door lock actuator 502 (door lock mechanism) connected to body ECU 500, trunk lock actuator 503, It includes a lock position SW (switch) 504, a courtesy switch 505 for each door, and a hazard lamp unit 501 (locking / unlocking answer back output means). The smart entry control device 110 is connected to an IG (ignition) SW111, an ACC (accessory) SW112, a D seat trigger SW (driver seat trigger switch) 113, and a P seat trigger SW (passenger seat trigger switch) 114. . Each trigger SW 113, 114 is a touch sensor provided on a door outside handle (not shown) for opening and closing the door.

  As shown in FIG. 3B, the wireless portable key 120 includes a battery 121, a stabilization circuit 122, a communication circuit 124, and an antenna 123. The communication circuit 124 stores an ID code unique to the vehicle.

  The smart entry control device 110 is configured as a normal computer, and is configured as microcomputer hardware including a CPU, a ROM, a RAM, an input / output unit (I / O), and a bus line connecting them. A control program and an ID code are stored in the ROM, and a work memory and an ID authentication flag are formed in the RAM. When the CPU reads out the ROM control program and executes the RAM work memory as a work area, the following smart entry system functions are executed.

  That is, when the doors of the vehicle are all closed and the doors are locked, a request signal is periodically wirelessly transmitted from the transmitter 12 every predetermined period (hereinafter referred to as “in-vehicle wireless polling”) to detect the approach of the user. When a person carrying the wireless portable key 120 enters the detection area, the wireless portable key 120 responds to the inside (ID storage unit 124 of the communication circuit). The ID code stored in is transmitted. In the vehicle, the transmitted ID code is collated, and an unlock standby state in which the door can be unlocked based on the collation result is set. In this unlock standby state, when it is detected that the trigger switches 113 and 114 provided on the door outside handle are touched, the door lock actuator 503 unlocks the door. On the other hand, when the ignition switch 111 is turned off and the person carrying the wireless portable key 120 gets off and touches the trigger switches 113 and 114 with all the doors closed, wireless communication with the wireless portable key is triggered by this. Is started and the above-mentioned ID code is collated, and all the doors are locked based on the collation result. Since all doors are locked, the above-described vehicle interior wireless polling is started. Note that the unlocking / unlocking answer output is made by, for example, blinking of a hazard lamp by the hazard lamp unit 501 and the lock / unlock is identified according to the number of blinks.

  The transmitter 12 is provided with a transmitter for in-vehicle transmission and a trunk (not shown) in addition to a transmitter for out-of-vehicle transmission at the door of each seat. On the other hand, the receiver 11 serving as the ID code receiving means includes receivers 11a, 11b, 11c, and 11d for receiving outside the vehicle, provided at the doors of the respective seats, as well as receivers for receiving inside the vehicle and for trunks ( (Not shown) is provided. The receivers 11a, 11b, 11c, and 11d are provided in this order corresponding to the front right door (driver's seat), front left seat (passenger seat), rear left seat, and rear right seat door. .

  The power window control device 104 shown in FIG. 2 is a control subject of the power window system 400 shown in FIG. A power window system 400 of FIG. 4 includes a power window control device 104, a window driving unit 450 (450a to 450d), a window opening / closing operation unit 430 (430a to 430d), a window lock setting operation unit (open / close prohibition setting operation unit) 440a. The whole is configured by connecting.

  As shown in FIG. 4, the drive unit 450 includes a motor drive drive circuit 420 (420 a to 420 d) connected to the power window control device 104 and a motor 410 (410 a to 410 d) that can rotate in both forward and reverse directions. Become. Each of the motors 410a to 410d is configured by a DC motor in this embodiment (of course, other types of motors such as an induction motor, a brushless motor, and a stepping motor may be used). These drive circuits 420a to 420d and motors 410a to 410d open and close the corresponding power windows.

  The window lock setting operation unit 440a is provided at a position where the driver of the driver's seat can operate, and locks (opens and closes) and unlocks (opens and closes) for opening and closing the power window corresponding to a seat other than the driver's seat. Set. Window opening / closing operation section 430 (430a to 430d) is provided corresponding to each seat, and opens and closes the power window of the corresponding seat.

  The power window control device 104 is configured as well-known microcomputer hardware including a CPU, a ROM, a RAM, and the like. In the state where the window lock setting operation unit 440a is operated to be unlocked (open / close permission), the power window control device 104 is based on the operation content when a user operation is performed on the window open / close operation units 430a to 430d. Then, a drive command is given to the corresponding drive circuits 420a to 420d to open or close the motors 410a to 410d.

  Note that the window driving units 450a (410a, 420a), 450b (410b, 420b), 450c (410c, 420c), and 450d (410d, 420d) are in this order, the front seat right (driver's seat), the front seat left ( It is provided corresponding to the power windows of the passenger seat), the rear left seat, and the rear right seat. The window opening / closing operation units 430a, 430b, 430c, and 430d are provided in this order corresponding to the power windows of the front seat right (driver's seat), front seat left (passenger seat), rear seat left, and rear seat right. It has been. Window lock setting operation section (open / close prohibition setting operation section) 440a is provided corresponding to the front right (driver's seat).

  The audio control device 103 is a control subject of the audio control system (audio device) 300 shown in FIG. The audio control system 300 in FIG. 5 is configured as a whole by connecting an audio drive unit 350 and an audio operation unit 340 to the audio control apparatus 103. The audio control device 103 is configured as well-known microcomputer hardware including a CPU, a ROM, a RAM, and the like, and as shown in FIG. 5, music data input for acquiring music source data from a predetermined medium (storage medium) 310 And a music database 330 which is an external storage device for storing music source data. The operation unit 340 is configured as a known audio operation unit such as a music selection operation unit 341, a media selection operation unit 342, and a volume adjustment operation unit 343.

  When the music selection operation unit 342 or the music selection operation unit 343 specifies an output target song, the audio control apparatus 103 reads the music source data of the specified song from the medium 310 or the music database 330 and sends it to the drive unit 630. Output. The music source data is first decoded into digital music waveform data by the decoding unit 351 in the audio driving unit 350, converted to analog by the analog conversion unit 352, and then passed through the preamplifier 353 and the power amplifier 354 to the designated volume. Is output from the speaker 355.

  The main panel 105 is formed in a vehicle instrument panel that can be operated by the driver. In addition to the audio system 300, the main panel 105 is provided with an operation unit 105a for inputting device operation information for operating vehicle-mounted electronic devices such as a vehicle-mounted navigation device and a vehicle-mounted air conditioner. The operation unit 105 a includes various operation units 341 to 343 of the audio system 300.

  The navigation device 106 is a data storage device that stores a host vehicle position detector including a known geomagnetic sensor, gyroscope, distance sensor, GPS receiver, and the like, map data, and a navigation program for executing route guidance. In addition to the HDD, the display device 106a, the audio output device 106b, an operation unit (included in the operation unit 105a of the main panel 105), and the like are included.

  The display device 106a in the present embodiment is configured by a known color liquid crystal display, and includes a dot matrix LCD (Liquid Crystal Display) and a driver circuit (not shown) for performing LCD display control. The driver circuit uses, for example, an active matrix drive system in which a transistor is attached to each pixel so that the target pixel can be reliably turned on and off, and display commands and display screen data sent from the control circuit of the navigation device Display based on. Alternatively, an organic EL (ElectroLuminescence) display or a plasma display may be used as the display device 106a.

  In addition, the audio output device 106b in the present embodiment is a speaker connected to a well-known voice synthesis circuit, and is stored in the memory or HDD of the navigation device 300 according to a command from the control circuit of the navigation device 300. The voice data is converted into analog voice by a voice synthesis circuit and output from the speaker 106b. Note that speech synthesis methods include a recording / editing method in which speech waveforms are stored as they are or after being encoded and connected as necessary, and a text synthesis method in which corresponding speech is synthesized from character input information.

  The meter ECU 107 is a main controller of the on-vehicle meter device, has a well-known configuration including a CPU, a ROM, a RAM, and the like, and is connected to the meter display device (meter display unit) 107a. The meter display device 107a is also composed of a known color liquid crystal display and includes a dot matrix LCD (Liquid Crystal Display) and a driver circuit (not shown) for performing LCD display control. The driver circuit uses, for example, an active matrix drive system in which a transistor is attached to each pixel so that the target pixel can be reliably turned on and off, and display commands and display screen data sent from the control circuit of the navigation device Display based on. Further, an organic EL (ElectroLuminescence) display or a plasma display may be used as the display device 107a.

  By the way, in the vehicle control apparatus 100 described above, when approaching a railroad crossing, the operation state of the electronic device involved in the vehicle interior acoustic state is changed from the operation state before the railroad crossing approach to the sound outside the vehicle (especially an alarm sound for a railroad crossing). The outside-sound listening support process is changed to a predetermined outside-sound-listening support operation state that facilitates listening to the sound. The non-volatile memory of the vehicle control device 100 stores an outside-sound listening support program that executes the process, and the outside-sound listening support process is executed when the CPU executes the program. Hereinafter, the flow of processing of the outside-sound listening support program shown in FIG. 6 will be described using the flowchart of FIG.

  The assist vehicle external sound listening support program of FIG. 6 is executed as the vehicle engine starts. On the other hand, the crossing caution radio information sending units (crossing caution radio information sending means) 21a and 21b of the crossing are used in the smart entry system of the vehicle using the crossing caution radio information that can be distinguished from the signal related to the smart entry system of the vehicle. In a frequency band (LF band) that can be received by the receiver 11 (crossing caution radio information receiving means), radio transmission is performed at predetermined time intervals within a predetermined distance.

  First, in S11, it is detected whether or not the vehicle (automobile) is in an approaching state for a crossing (crossing approach state determining means). The approach to the crossing is detected from a state in which all of the receivers 11a, 11b, 11c, and 11d used in the smart entry system have not received the crossing warning radio information from the crossing. This is done depending on whether or not the crossing caution radio information is received in a form exceeding the threshold level. That is, it is determined that the vehicle is in a state of approaching the level crossing when the level crossing caution radio information is received in a form exceeding the predetermined reception level from the state where the level crossing caution radio information is not received. If it is determined in S11 that the vehicle is approaching the railroad crossing, the process proceeds to S12.

  In S12, the driver is warned that the vehicle is approaching the crossing (crossing approach warning means). More specifically, railroad crossing approach warning information is output as a combination of visual information and audio information. In the present embodiment, the meter ECU 107 and the audio control device 103 each store such crossing approach warning information in its predetermined storage area. In S12, the vehicle control device 100 performs the meter ECU 107 and the audio control device 103. In addition, warning output instruction information for outputting the crossing approach warning information is transmitted. As a result, the meter ECU 107 and the audio control device 103 that have received the warning output instruction information cause the meter display device 107a and the audio driving unit 350 to be controlled by itself to output the level crossing approach warning information. As a result, the meter display device 107a displays a text indicating that the level crossing is approaching, and the speaker 355 of the audio system 300 outputs a sound indicating that the level crossing is approaching. The level crossing approach warning information may be output as either visual information or audio information. Note that the level crossing approach warning information may be output by the display device 106a and the audio output device 106b of the navigation device 106.

  In S13, it is confirmed whether the vehicle is in a decelerated state before the crossing approach, that is, before the reception of the crossing caution radio information in the state where the crossing caution radio information is received in S11. In this embodiment, when the detected value of the vehicle speed sensor (vehicle speed detection means) 111 falls below a predetermined speed (for example, 10 km / h) in a state where the crossing warning radio information is received, it is determined that the vehicle is in a deceleration state. Note that a case where the brake sensor (brake operation detecting means) 112 detects a brake operation in a state where the crossing caution radio information is received may be determined as a deceleration state of the vehicle.

  In S14, the operation state of the electronic device related to the vehicle interior acoustic state of the vehicle is set to a predetermined vehicle exterior sound that makes it easier to listen to the vehicle exterior sound before approaching the railroad crossing, that is, before receiving the crossing warning radio information. The listening support operation state is changed (outside vehicle sound listening support means). In the present embodiment, the volume of the operating state of the audio system (audio device) is set to be smaller than that before approaching the level crossing, and the power window is set to have a larger open area than before approaching the level crossing. These outside sound listening support operation state settings are set based on the setting information stored in the nonvolatile memory 100a of the vehicle control device 100.

  In S15, the reception level of the crossing warning radio information received by the receivers 11a, 11b, 11c, 11d is set to the first receivers (first receiving means) 11a, 11b corresponding to the front seat of the vehicle, Compared with the two receivers (second receiving means) 11c and 11d (reception level comparison / determination means), the receiving levels of the second receivers 11c and 11d are the receiving levels of the first receivers 11a and 11b. It is determined whether it is higher. Furthermore, the comparison of the reception level is performed between the first receiver 11a, 11b having the highest reception level and the second receiver 11c, 11d having the lowest reception level. In S15, in the first receiver and the second receiver to be compared, until it is determined that the reception level of the crossing caution radio information is higher in the second receiver than in the first receiver. Repeatedly executed. If it is determined that the second receiver has a higher reception level of the crossing warning radio information than the first receiver, the process proceeds to S16.

  Note that the determination that the second receiver has a higher level of reception of crossing warning radio information than the first receiver means that the crossing warning radio information is received from the rear of the vehicle. Therefore, in S16, it is determined that the vehicle is in a crossing completion state (crossing crossing completion state determination means).

  When it is determined that the level crossing has been completed, in S17, the operation state of the electronic device is returned to the operation state before the vehicle approaches the level crossing (electronic device operation state return means), and the program is terminated.

  When the CPU of the vehicle control device 100 executes the outside sound listening support program, the outside sound listening support means, the reception level comparison determination means, the level crossing completion state determination means, and the electronic equipment operation state return means according to the present invention. The railroad crossing approach state determination means functions.

  Further, in the present embodiment, the non-volatile memory (vehicle outside sound listening support operation state storage means) 100a of the vehicle control device 100 has a vehicle outside sound listening support operation of an electronic device involved in the vehicle interior acoustic state. Although the setting contents of the state are stored, the setting contents can be changed based on the setting input to the outside-sound listening support operation state setting change input unit. In the present embodiment, the switching operation for switching the display screen of the display device 106a of the navigation device 106 to the vehicle outside sound listening support operation state setting change screen 39 for changing the setting content of the vehicle outside sound listening support operation state shown in FIG. The touch switch (external sound listening support operation state setting change input unit) 32a, 32b, 34a, 34b, 35 displayed on the screen 39 is touched to change the setting contents of the external sound listening support operation state. Can be changed. That is, it is possible to change the setting content of the outside-sound listening support operation state from the display screen of the display device 106a of the navigation device 106 in a form that the vehicle control device 100 is the main body. For this reason, the vehicle control apparatus 100 also functions as a vehicle outside sound listening support operation state changing unit.

  As mentioned above, although one Embodiment of this invention was described, these are only illustrations to the last, and this invention is not limited to these, A various change is possible unless it deviates from the meaning of a claim. is there.

  For example, instead of the smart entry control device 110 and its receiver 11 shown in FIG. 2, as shown in FIG. (ETC receiver) 150 may be provided, and the crossing caution radio information may be received by the receiver 150 of the ETC on-vehicle device. In this case, the crossing caution radio information transmitting unit of the crossing 20 (20a, 20b), as shown in FIG. 7, is a transmitting unit 25 (25a, 20) that wirelessly transmits the crossing caution radio information in a form that can be received by the ETC on-board unit. 25b). In addition, the receiver 150 of the ETC on-vehicle device is usually provided only at the vehicle front position.

  Further, in place of the smart entry control device 110 and its receiver 11 of FIG. 2, as shown in FIG. 10, an optical beacon or radio wave transmitted from a VICS (Vehicle Information and Communication System) center 14 is used. A beacon receiver (beacon receiving device) 160 capable of receiving road traffic information or receiving FM multiplex broadcasting using a beacon can be provided, and the beacon receiver 160 can be configured to receive crossing caution radio information. In this case, as shown in FIG. 9, the crossing caution radio information transmitting unit of the crossing 20 (20a, 20b) includes a beacon transmitter 26 (26a, 26b) that wirelessly transmits crossing caution radio information using light or radio waves as a medium. Become.

  If the receiver that receives the crossing warning radio information is not provided in front of or behind the vehicle, such as the receiver 150 of the ETC on-vehicle device, the outside-sound listening support program uses the process shown in FIG. The process is as shown in FIG. The outside-sound listening support process in FIG. 11 is the same as the process contents except that only the process contents of S15 and S16 in FIG. 6 are changed. In the case of the outside-sound listening support process in FIG. 6, it is assumed that the receivers 11 (11a to 11d) are provided in the front and rear of the vehicle. Although the state could be determined, in the case of FIG. 11, it is assumed that the receiver 150 is provided only at one place in the vehicle length direction, and therefore the comparison of the reception levels before and after cannot be made. Therefore, in the process of FIG. 11, in S25 corresponding to S15 of FIG. 6, the reception level of the crossing caution radio information received at a predetermined reception level (threshold level) or higher is the predetermined reception level (threshold level). It is determined whether or not the vehicle has been crossed, and if it falls below that, it is determined in S26 corresponding to S16 in FIG.

The figure explaining 1st embodiment of the vehicle interior acoustic state adjustment system of this invention. The block diagram which shows 1st embodiment of the vehicle interior acoustic state adjustment system of this invention. The block diagram of a smart entry system. The block diagram of a power window system. The block diagram of an audio apparatus. The flowchart which shows the flow of a process of an external sound listening assistance program. The figure explaining 2nd embodiment of the vehicle interior acoustic state adjustment system of this invention. The block diagram which shows 2nd embodiment of the vehicle interior acoustic state adjustment system of this invention. The figure explaining 3rd embodiment of the vehicle interior acoustic state adjustment system of this invention. The block diagram which shows 3rd embodiment of the vehicle interior acoustic state adjustment system of this invention. The flowchart which shows the flow of a process of the external sound listening assistance program different from FIG. The example of a screen for changing the operation state setting for listening to outside the vehicle sound.

Explanation of symbols

1 Car interior acoustic condition adjustment system 10 Automobile (vehicle)
11 (11a, 11b, 11c, 11d), 150, 160 receiver (crossing caution radio information receiving means)
20 (20a, 20b) Railroad crossings 21 (21a, 21b), 25 (25a, 25b), 26 (26a, 26b) Railroad crossing caution radio information sending unit (crossing caution radio information sending means)
22 (22a, 22b) Alarm sound output unit 100 Vehicle control device 101 Vehicle speed sensor (vehicle speed detection means)
102 Brake sensor (brake operation detection means)
103 voice output device 104 power window control device 105 main panel 106 navigation device 107 meter ECU
107a Meter display device 110 Smart entry control device 200 Smart entry system 300 Audio control system (audio device)
400 power window system

Claims (12)

A crossing caution radio information sending means for wirelessly sending a crossing caution radio information that is provided at a crossing and that can be received by a vehicle approaching within a predetermined distance with respect to the crossing;
A crossing caution radio information receiving means provided in the automobile for receiving the crossing caution radio information;
With the reception of the crossing caution radio information provided in the automobile, it is possible to easily listen to the sound outside the vehicle from the operation state before the crossing approach, from the operation state before the crossing approach of the operation state of the electronic equipment involved in the vehicle interior acoustic state of the vehicle Vehicle outside sound listening support means for changing to a predetermined vehicle outside sound listening support operation state,
A level crossing crossing completion state determining unit that is provided in the vehicle and determines a level crossing crossing completion state of the vehicle based on a reception state of the crossing warning radio information;
Electronic device operation state return means provided in the vehicle and returning the operation state of the electronic device to the operation state before the vehicle approaches the crossing when it is determined that the crossing has been completed.
A vehicle interior acoustic state adjustment system comprising: The vehicle is provided with a crossing approach state determination means for determining the crossing approach state when a reception level of the crossing warning radio information exceeds a predetermined threshold level,
The vehicle interior according to claim 1, wherein the outside sound listening support means sets the operation state of the electronic device to the outside sound listening support operation state when it is determined that the crossing approaching state is determined. Acoustic conditioning system. The crossing caution radio information receiving means includes first receiving means, and second receiving means provided on the rear side in the vehicle length direction of the automobile from the first receiving means,
The level crossing completion state determination means is a reception level for determining a comparison between the reception level of the crossing caution radio information by the first reception means and the reception level of the crossing caution radio information by the second reception means. 3. A comparison determination unit, wherein the vehicle is determined to be in a crossing completion state when the reception level of the second reception unit is higher than the reception level of the first reception unit. The vehicle interior acoustic state adjustment system described in 1. The crossing caution radio information sending means of the crossing is a beacon transmitter that wirelessly sends the crossing caution radio information using light or radio waves as a medium,
The vehicle interior acoustic state adjustment system according to any one of claims 1 to 3, wherein the crossing caution radio information receiving means of the automobile is a beacon receiver. The automobile is used in an automatic fee collection system for vehicles, and includes an ETC on-vehicle device that can wirelessly communicate with an ETC roadside device,
The level crossing caution radio information sending means of the level crossing is for wirelessly sending the level crossing caution radio information in a form receivable by the ETC vehicle-mounted device,
The vehicle interior acoustic state adjustment system according to any one of claims 1 to 3, wherein the crossing caution radio information receiving means of the automobile is also used as a receiver of the ETC on-vehicle device. The automobile wirelessly receives a vehicle-specific ID code transmitted from a portable communication device by means of an ID code receiving means provided at the door of each seat, and compares the ID code with a master code stored in itself. And a smart entry system that permits a predetermined vehicle operation based on the collation result,
The crossing caution radio information sending means of the crossing is to wirelessly send the crossing caution radio information in a form receivable by the ID code receiving means,
The vehicle crossing warning radio information receiving means is also used as the ID code receiving means, and the ID code receiving means corresponding to the front seat is the first receiving means and the ID code receiving means corresponding to the rear seat. 4. The vehicle interior acoustic state adjustment system according to claim 3, wherein the second reception means is defined. The electronic device is a plurality of power windows provided in the automobile,
2. The outside sound listening support means changes to the outside sound listening support operation state in which the open area of the power window is larger than that before approaching a crossing, triggered by reception of the crossing warning radio information. The vehicle interior acoustic state adjustment system according to any one of claims 6 to 6. The electronic device is an audio device provided in the automobile,
The outside-sound listening support means changes the operating state of the audio device to the outside-sound listening support operating state whose volume is lower than that before approaching a crossing, triggered by reception of the crossing warning radio information. The vehicle interior acoustic state adjustment system according to any one of claims 1 to 7.   When the vehicle receives the crossing warning radio information, the vehicle visually recognizes that the vehicle is approaching the crossing before the outside sound listening support means is changed to the outside sound listening support operation state. The vehicle interior acoustic state adjustment system according to any one of claims 1 to 8, further comprising a crossing approach warning means for warning by information, voice information, or a combination thereof. The vehicle is provided with vehicle speed detection means for detecting the vehicle speed of the vehicle,
The outside sound listening support means is in a state where the crossing caution radio information is received and when the vehicle speed detected by the vehicle speed detection means falls below a predetermined speed, the outside sound listening support operation state is entered. The vehicle interior acoustic state adjustment system according to claim 9, wherein the change is made. The automobile is provided with a brake operation detecting means for detecting the presence or absence of the brake operation of the automobile,
10. The outside sound listening support means changes to the outside sound listening support operation state when the crossing caution radio information is received and the brake operation is detected. The vehicle interior acoustic state adjustment system according to 10.   In the automobile, the outside sound listening support operation state storage means for storing the setting contents of the outside sound listening support operation state, and the setting contents of the outside sound listening support operation state of the electronic device are changed by a user operation. The outside sound listening support operation state setting change input unit that accepts the change input to be performed, and the outside sound listening stored in the support operation state storage unit based on the received change input of the outside sound listening support operation state. The vehicle interior acoustic state adjustment system according to any one of claims 1 to 11, further comprising a vehicle exterior sound listening support operation state change unit that changes setting contents of the support operation state.

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