JPH0644640U - In-vehicle warning sound device - Google Patents

Abstract

(57) [Abstract] [Purpose] When a vehicle equipped with a power window or an audio device is used, when a siren sound of an emergency vehicle of a specific frequency approaches, a vehicle with a warning sound can notify the driver of the approach of the emergency vehicle by these devices. The purpose is to provide an indoor reporting device. A warning sound detection unit A for detecting the presence of a warning sound of a specific frequency such as a siren sound of an emergency vehicle or a warning sound of a railroad crossing from sounds outside the vehicle collected by a microphone M. A warning sound relative position detecting means B for detecting a relative positional relationship between the detected warning sound and the own vehicle V,
When the warning sound approaches the vehicle V, the warning sound forced warning means C for forcibly reporting the warning sound to the driver in the vehicle interior is provided to constitute the warning sound vehicle interior reporting device. In a car with a power window, the window is forcibly opened, and in a car with an audio device, the volume is lowered or a warning sound is emitted from a speaker.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a warning sound vehicle interior notification device, and in particular, a warning sound vehicle interior notification system capable of reporting a warning sound emitted from an emergency vehicle or a warning sound emitted from a railroad crossing to a driver in the vehicle interior. Regarding the device.

[0002]

[Prior art]

 In recent years, the quietness of the interior of a car has been significantly increased, making it difficult to hear outside noise. Also, due to the increase in the output of car audio equipment, there is a tendency to increase the volume of the audio equipment in the passenger compartment, and in such situations it becomes more difficult for outside sounds to reach the driver.

By the way, conventionally, when an ordinary vehicle travels on a road (public road) and an emergency vehicle such as an ambulance, a fire engine, or a police car approaches by making a siren sound, the ordinary vehicle becomes an emergency vehicle. I need to give way. The approach of an emergency vehicle has conventionally been recognized by the driver of the vehicle listening to the siren sound or looking at the warning light of the emergency vehicle.

In addition, it is not allowed to enter a railroad crossing with an alarm when the alarm is blinking and ringing.

[0005]

[Problems to be solved by the device]

 However, in such a situation, when an ordinary vehicle is driving on the road and an emergency vehicle such as an ambulance, a fire engine, or a police car approaches by sounding a siren, especially when the driver hears the car audio in the vehicle. When listening, the siren sound is difficult to hear and the driver cannot know the approach of the emergency vehicle, which may hinder the running of the emergency vehicle.

Further, even if the siren sound emitted from the emergency vehicle is heard, it is impossible to know whether the siren sound is approaching or moving away from the own vehicle. There is also the problem of delaying coping. Furthermore, if you are driving behind a large vehicle on a non-geographical road, you may not notice the approach of the railroad crossing, and there is a danger that you may accidentally enter the railroad crossing despite the alarm. is there.

Therefore, the present invention ensures that even in a situation where an audio device is being heard in the vehicle interior, the siren sound of an emergency vehicle of a specific frequency approaches and the alarm sound of an alarm device when approaching a railroad crossing is ensured. It is an object of the present invention to provide an in-vehicle alarm device that emits a warning sound that can notify the driver.

[0008]

[Means for Solving the Problems]

 The configuration of an acceleration limiting device for a vehicle equipped with an electronically controlled engine according to the present invention which achieves the above object is shown in FIG. As shown in FIG. 1, the warning sound vehicle interior notification device of the present invention is a device for reporting a warning sound existing outside the vehicle V to a driver in the vehicle interior, and collects a sound by a microphone M. From the sound outside the vehicle, the warning sound detection means A for detecting the presence of a warning sound of a specific frequency, such as the sound of a sound emitted by an emergency vehicle or the sound of a railroad crossing, and the detected warning sound. A warning sound relative position detecting means B for detecting a relative positional relationship with the host vehicle V and a warning sound for forcibly reporting the warning sound to the driver in the vehicle compartment when the warning sound approaches the host vehicle V. It is characterized by having a compulsory reporting means C.

In a vehicle with a power window, as shown in FIG. 2, a motor drive device for a power window in which the warning sound compulsory reporting means C is operated in a direction in which it is forcibly opened by the motor PM of the power window PW. It can be configured as C1. In an automobile with an audio device, as shown in FIG. 3, the warning sound compulsory reporting means C is operated to forcibly reduce the volume of the audio device AD, or Even when in the state, the warning sound detected by the warning sound detecting means A or a sound corresponding to the warning sound can be configured as the control device C2 of the audio device which allows the speaker SP of the audio device AD to flow into the vehicle interior.

Further, the relative position detecting means B detects the relative positional relationship between the warning sound and the own vehicle V by the level change of the warning sound detected by the warning sound detecting means A or by the warning sound detecting means A. It can be detected using the Doppler effect by the frequency change of the generated warning sound.

[0011]

[Action]

 According to the warning sound vehicle interior alarm device of the present invention, when the approach of an emergency vehicle is detected by the siren sound, in a vehicle with a power window, the power window is forcedly opened and the siren sound is emitted to the driver. In a vehicle equipped with audio equipment, the volume of the audio equipment is turned down, or the audio equipment is forcibly turned on and the siren sound is reproduced from the speaker of this audio equipment. As a result, the driver can know the approach of the emergency vehicle to the own vehicle, and can prevent the travel of the emergency vehicle from being hindered.

[0012]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 4 shows the configuration of an embodiment of the warning sound vehicle interior alarm device according to the present invention, which is applied to a vehicle with a power window. A microphone 1 for collecting sounds outside the vehicle is provided at a predetermined location (for example, four corners) of the vehicle (not shown), and the output of the microphone 1 is input to the control device 20 through the bandpass filter 2. . The band-pass filter 2 passes only the sound of the sound collected by the microphone 1 in the frequency band near the siren sound of an emergency vehicle or the sound of an alarm at a railroad crossing.

In addition to the input circuit 21, the control device 20 includes an A / D converter 22, a central processing circuit (CPU) 23, a read only memory (ROM) 24, a read / write memory (RAM) 25, and an output circuit. 26, which are connected to each other by a bus 27. The output circuit 26 is connected to the power window driving motor 3 that opens and closes the power window 4, so that the opening and closing of the power window 4 by the power window driving motor 3 can be controlled.

When a siren sound that has passed through the bandpass filter 2 or a signal having a frequency near the alarm sound from the alarm is input to the input circuit 21 of the control device 20 having the above configuration, the frequency and level Is converted into a digital signal by the A / D converter 22 and temporarily stored in the RAM 25. The CPU 23 compares the frequency of the silencing sound stored in the ROM 24 with the input frequency. When the input frequency matches the siren sound, the level change or the frequency change is detected, and when the siren sound is approaching at a predetermined level or more, the CPU 23 outputs the output. A signal for opening the power window 4 is output to the power window driving motor 3 via the path 26, and the power window 4 is controlled to open from the closed state. The sensor shown by 5 detects whether or not the power window 4 is open.

FIG. 5 is a flowchart for explaining the operation procedure of the control device 20 in detail, and it is assumed that the control device 20 is executed at predetermined time intervals. In this description, for simplification of the description, only the procedure of detecting only the siren sound from the emergency vehicle will be described. In step 501, the sound outside the vehicle is collected by the microphone 1 through the bandpass filter 2. Next, in step 502, the CPU 23 determines whether or not the siren sound S is included in the collected vehicle exterior sounds.

When it is determined in step 502 that the siren sound S is not included in the collected outside sounds, this routine is ended. On the other hand, in the determination in step 502, when the siren sound S is included in the collected outside sounds, the process proceeds to step 503, the silence sound S is temporarily stored in the RAM 25, and the process proceeds to step 504. In step 504, it is determined whether or not the level of the siren sound S is equal to or higher than a predetermined level, and if it is lower than the predetermined level, this routine is ended. On the other hand, when the level of the siren sound S is equal to or higher than the predetermined level in the determination in step 504, the process proceeds to step 505.

In step 505, it is determined whether or not the siren sound S having a predetermined level or more is approaching the host vehicle. This judgment is made when the level of the siren sound S is gradually higher than the previous detection value or when the frequency of the siren sound S is higher than the frequency of the siren sound stored in the ROM 24 by a predetermined frequency (approximated by the Doppler effect). (Indicating that they are doing). When it is determined in step 505 that the siren sound is not approaching, this routine is ended, while when it is determined in step 505 that the siren sound S is approaching, the routine proceeds to step 506.

In step 506, it is determined whether or not the power window 4 is already opened. This determination can be made by a power window opening sensor 5 provided near the power window 4. The determination as to whether the power window 4 is open may be made based on, for example, whether or not the power window is open about 5 cm from the upper end of the window frame. If it is determined in step 506 that the power window is open, there is no need to open any more windows, and this routine is terminated. On the other hand, when it is determined that the power window is not opened (including the case where the power window is only slightly opened), the process proceeds to step 507 to energize the power window driving motor 3 to open the power window 4 at a predetermined height. .

By the control as described above, when the emergency vehicle approaches the own vehicle, the window is opened, so that the external siren sound can be surely reached to the driver's ear, and the driver is Since the power window opens even if you do not operate it, you can easily know the approach of an emergency vehicle, and you can prevent the emergency vehicle from advancing by taking measures to retract your vehicle.

Similarly, when the vehicle approaches a railroad crossing where an alarm is sounding, the window will open, so that the alarm sound of the railroad crossing will surely reach the ears of the driver, and the operator will accidentally enter the railroad crossing that is closed. There are no accidents. FIG. 6 shows the construction of another embodiment of the warning sound in-vehicle alarm device according to the present invention, which is applied to a vehicle equipped with an audio device, and is the same as the constituent parts explained in FIG. The same reference numerals are given to the constituent members. Also in this embodiment, only the case of detecting the siren sound will be described.

A microphone 1 for collecting sounds outside the vehicle is also provided at a predetermined location of the vehicle of this embodiment, for example, at four corners, and the output of the microphone 1 is passed through a bandpass filter 2 to a control device 20. Of the sounds collected by the microphone 1, only the frequency band near the siren sound of the emergency vehicle is input to the control device 20.

In addition to the input circuit 21, the control device 20 includes an A / D converter 22, a CPU 23, a ROM 24, a RAM 25, and an output circuit 26, which are connected to each other by a bus 27. The audio device 6 is connected to the output circuit 26. The audio device 6 has a device control computer 60, to which a radio 60 such as FM or AM, a tape reproducing device 62 such as a cassette tape or DAT, and an audio device such as a compact disc device (CD) 63 are connected. Has been done. Then, the reproduced sound of the radio 60, the tape reproducing device 62, or the CD 63 is output from the speaker 7 provided in the vehicle interior via the amplifier 64.

When a signal having a frequency near the siren sound that has passed through the bandpass filter 2 is input to the input circuit 21 of the control device 20 having the above-described configuration, the frequency and level of the siren sound are input to the A / D converter 22. It is converted into a digital signal by and is temporarily stored in the RAM 25. The CPU 23 compares the frequency of the siren sound stored in the ROM 24 with the input frequency. When the input frequency coincides with the siren sound, the level change or frequency change is detected, and when the siren sound is approaching at a predetermined level or higher, the CPU 23 outputs the output circuit 26. A control signal for forcibly notifying the driver of the siren sound is output to the audio device 6 via the. There are two methods for forcibly notifying the driver of the siren sound by the audio device 6, namely, reducing the volume of the audio device 6 and forcibly outputting the siren sound from the speaker 7 of the audio device 6. This operation will be described with reference to FIG. 7, and the operation will be described with reference to FIG.

FIG. 7 is a flow chart for explaining in detail the operation procedure when the control device 20 approaches the siren sound, and is executed every predetermined time. It should be noted that the procedure for determining whether or not the siren sound is approaching the host vehicle by collecting an external sound by the microphone 1 is the same as that of the above-described embodiment, and therefore, the same step is used for the same step. A number is attached and the description is omitted.

The procedure from step 501 to step 505 shows the procedure for detecting the siren sound S and detecting whether or not the siren sound S is approaching the host vehicle. When it is determined in step 505 that the siren sound S is approaching, the process proceeds to step 701 and thereafter. In step 701, it is determined whether the audio device 6 is ON. When the audio device 6 is OFF, this routine is terminated, and when the audio device 6 is ON, the process proceeds to step 702, where the volume of the audio device currently being listened to is reduced.

By the control as described above, the volume of the audio device is lowered when the emergency vehicle approaches the own vehicle, so that the external siren sound can surely reach the ears of the driver, and Since the volume of the audio device decreases even if the driver does not operate anything, it is possible to easily know the approach of the emergency vehicle and take measures to evacuate the own vehicle so as not to hinder the progress of the emergency vehicle. can do.

Similarly, when the vehicle approaches a railroad crossing at which an alarm is sounding, the window will open, so that the alarm sound of the railroad crossing will surely reach the ears of the driver, and the vehicle will accidentally enter the railroad crossing that is closed. There are no accidents. FIG. 8 is a flow chart for explaining in detail the operation procedure when the siren sound is approaching by the control device 20, which is executed every predetermined time. Also in this embodiment, the external sound is collected by the microphone 1 and the procedure for determining whether or not the siren sound is approaching the host vehicle is the same as in the above-described embodiment, and therefore the same steps are the same. Step numbers are attached and the description thereof is omitted.

The procedure from step 501 to step 505 shows the detection procedure of this siren sound S and the detection procedure of whether or not the siren sound S is approaching the host vehicle. When it is determined in step 505 that the siren sound S is approaching, the process proceeds to step 801 and thereafter. In step 801, it is determined whether the audio device 6 is ON. If the audio device 6 is ON, the process proceeds to step 803, and if the audio device 6 is OFF, the process proceeds to step 802 to forcibly turn the audio device ON. When the audio device is turned on, the state of the audio device before being turned off is generally set. That is, when the audio device 6 is turned off while listening to the radio 61, the sound of the radio 61 flows from the speaker 7 when the audio device 6 is turned on this time. Since the state in which the audio device is turned on is the same as the state in which the audio device 6 is turned on in step 801, the process proceeds to step 803.

At step 803, since the audio device 6 is in the ON state, a process of lowering the volume of the audio device 6 currently being listened to is performed. Then, in the following step 804, the output circuit of the control device 20 is connected to the computer 60 for controlling the audio device 6, the siren sound S of the emergency vehicle is output from the speaker 7, and the driver is sure to approach the emergency vehicle. To understand. In this case, as the silence sound S to be output from the speaker 7, the siren sound of the emergency vehicle actually collected from the microphone 1 may be directly output, but the control device 20 outputs an alarm corresponding to the siren sound. It is also possible to store the sound or the synthesized sound of the message that the emergency vehicle is approaching in the ROM 24 and output it from the speaker 7.

By the control as described above, when the emergency vehicle approaches the own vehicle, the volume of the audio device is lowered, and the siren sound or a warning sound corresponding to the siren sound is output from the speaker 7 of the audio device 6. As a result, the external siren sound will reach the driver's ears reliably, and the driver can easily know the approach of the emergency vehicle. It is possible to prevent it from hindering the progress of the vehicle.

Similarly, when the vehicle approaches a railroad crossing at which an alarm is sounding, the window will open, so that the alarm sound of the railroad crossing will surely reach the ears of the driver, and an accidentally approaching railroad crossing will be entered. There are no accidents.

[0032]

[Effect of device]

 As described above, according to the present invention, even when listening to the audio device in the passenger compartment, the warning sound of the alarm when the siren sound of the emergency vehicle of a specific frequency approaches or approaches the level crossing. Since the sound can be reliably reported to the driver, there is an effect that it does not hinder the progress of the emergency vehicle and there is no fear of accidentally entering the railroad crossing where the alarm is sounding.

[Brief description of drawings]

FIG. 1 is a principle configuration diagram showing a principle configuration of a warning sound vehicle interior alarm device of the present invention.

FIG. 2 is a configuration diagram showing a configuration of a warning sound vehicle interior alarm device of the present invention in an automobile with a power window.

FIG. 3 is a configuration diagram showing a configuration of a warning sound in-vehicle notification device of the present invention in a vehicle with an audio device.

FIG. 4 is a block diagram showing the configuration of an embodiment of the warning sound vehicle interior notification device of the present invention in a vehicle with a power window.

5 is a flowchart showing an example of a control procedure of the control device in FIG.

FIG. 6 is a block diagram showing the configuration of an embodiment of a warning sound vehicle interior notification device of the present invention in a vehicle equipped with an audio device.

7 is a flowchart showing an example of a control procedure of the control device of FIG.

FIG. 8 is a flowchart showing another example of the control procedure of the control device of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Microphone 2 ... Band pass filter 3 ... Power window drive motor 4 ... Power window 5 ... Sensor 6 ... Audio device 7 ... Speaker 20 ... Control device 60 ... Audio device control computer

Claims (6)

[Scope of utility model registration request] 1. A device for notifying a driver inside a vehicle of a warning sound existing outside the vehicle, wherein the siren sound of an emergency vehicle or a railroad crossing is selected from sounds outside the vehicle collected by a microphone. Warning sound detection means for detecting the presence of a warning sound of a specified frequency, such as the warning sound of, and a relative position detection means for the warning sound, which detects the relative positional relationship between the detected warning sound and the vehicle. A warning sound vehicle interior reporting device comprising: a warning sound forced reporting means for forcibly reporting the warning sound to a driver inside the vehicle when the vehicle approaches the vehicle. 2. The vehicle interior notification of an alarm sound according to claim 1, wherein the alarm sound compulsory notification means is a motor drive device for a power window that operates in a direction in which the power window is forcibly opened in a vehicle with a power window. apparatus. 3. The vehicle for warning sound according to claim 1, wherein the warning sound compulsory reporting means is a volume control device for an audio device which is operated to forcibly reduce the volume of the audio device in a car with an audio device. Indoor reporting device. 4. The warning sound compulsory reporting means outputs a warning sound picked up by the warning sound detecting means from a speaker of the audio equipment to a vehicle regardless of the state of the audio equipment in the car equipped with the audio equipment. The vehicle interior alarm device for a warning sound according to claim 1, which is a control device for an audio device that is played indoors. 5. The relative position detecting means detects the relative positional relationship between the warning sound and the own vehicle by a level change of the warning sound detected by the warning sound detecting means. The vehicle interior notification device for a warning sound according to any one of 1. 6. The relative position detection means detects the relative positional relationship between the warning sound and the own vehicle by using the Doppler effect based on the frequency change of the warning sound detected by the warning sound detection means. The vehicle interior notification device for a warning sound according to any one of claims 1 to 4.