JP2016170538A - Warning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology of informing a driver of a section which is danger to travel.SOLUTION: An acquisition part 12 acquires a travel sound data that is collected with a microphone mounted on a vehicle. A memory part 18 stores a plurality of pieces of reference data which is to be compared with the travel sound data acquired by the acquisition part 12, being a plurality of pieces of reference data corresponding to a case in which speeds of vehicles are different from each other. An output part 20 outputs a warning in a case where any one of the plurality of pieces of reference data stored in the memory part 18 and the travel sound data acquired by the acquisition part 12 is close to each other by an amount less than a threshold value.SELECTED DRAWING: Figure 3

Description

  The present invention relates to warning technology, and more particularly, to a warning device that outputs a warning in a vehicle.

  In the melody road, a predetermined melody is generated when the vehicle travels on the road surface. In such a melody load, it is required to play a desired melody instead of generating a simple sound or rhythm. Therefore, the groove group formed on the road surface is constructed in a section having a distance determined according to the sound duration of each sound and the assumed speed of the vehicle (see, for example, Patent Document 1).

WO 06/030915 Pamphlet

  Since the driver is alerted to the sound generated by the melody road, it is possible to give a warning to the driver by providing the melody road in a section where it is dangerous to travel. However, in the melody road, the driver understands the voice as meaningful only when the vehicle passes at an assumed speed. Therefore, if the vehicle passes at an unexpected speed, it does not play a role as a warning.

  This invention is made | formed in view of such a condition, The objective is to provide the technique which notifies a driver | operator of the area where it is dangerous to drive | work.

  In order to solve the above-described problem, an alarm device according to an aspect of the present invention includes an acquisition unit that acquires travel sound data collected by a microphone mounted on a vehicle and a comparison target of travel sound data acquired by the acquisition unit. A plurality of reference data, and a storage unit that stores a plurality of reference data corresponding to cases where the vehicle speeds of the vehicles are different from each other, and any one of the plurality of reference data stored in the storage unit And an output unit that outputs a warning when the running sound data acquired by the unit is closer to the threshold value.

  It should be noted that any combination of the above-described constituent elements and a conversion of the expression of the present invention between a method, an apparatus, a system, a recording medium, a computer program, etc. are also effective as an aspect of the present invention.

  ADVANTAGE OF THE INVENTION According to this invention, a driver | operator can be notified about the area where it is dangerous to drive | work.

It is a figure which shows the structure of the vehicle by which the warning device based on the Example of this invention is mounted. It is a figure which shows a mode that the vehicle of FIG. It is a figure which shows the structure of the warning device of FIG. It is the external view which looked at the vehicle interior of the vehicle of FIG. 1 from back. It is a figure which shows the screen displayed on the display part of FIG. It is a flowchart which shows the warning procedure by the warning device of FIG. It is a flowchart which shows another warning procedure by the warning device of FIG.

  Before specifically describing the embodiments of the present invention, an outline of the embodiments will be described. Embodiments of the present invention relate to a warning device mounted on a vehicle. As described above, if a melody road is provided in a section where it is dangerous to travel, it is possible to give a warning to the driver by a sound generated when traveling on the melody road. Here, it is assumed that the section that is dangerous to travel is the exit road of the expressway. The exit road of an expressway is a road on which a vehicle exiting from the expressway to a general road, a parking area, etc. (hereinafter referred to as “general road”) should travel. On the other hand, if there is a vehicle that tries to enter the expressway from a general road by running backward on this exit road, the possibility of a collision accident increases and it is dangerous.

  In order to cope with this, it is conceivable to provide a melody road on the exit road. Generally, in the melody road, the driver is meaningful when the vehicle travels at a speed outside a predetermined range. Cannot be recognized as voice. As a result, the driver cannot recognize the danger, and alerting by melody loading cannot be achieved. The purpose of this embodiment is to inform the driver of sections that are dangerous to travel regardless of the traveling speed.

  The warning device stores in advance the running sound generated by running the melody road as reference data. At that time, the reference data is stored so as to correspond to each of a plurality of different traveling speeds. The warning device selects any reference data based on the speed of the vehicle, and compares the reference data with the running sound. If both are close, the warning device notifies the driver of the danger.

  FIG. 1 shows a configuration of a vehicle 100 equipped with a warning device 10 according to an embodiment of the present invention. The vehicle 100 includes a warning device 10, a microphone 110, a vehicle speed sensor 112, a GPS receiving unit 114, a speaker 116, and a display unit 122. The melody road 204 is formed by digging a groove on the road surface. Since a well-known technique should just be used about the melody load 204, description is abbreviate | omitted here. The vehicle 100 is traveling on the melody road 204.

  The microphone 110 collects traveling sound generated by traveling on the melody road 204. The microphone 110 outputs the collected running sound to the warning device 10. The vehicle speed sensor 112 is constituted by a rotation sensor, for example, and generates vehicle speed pulse information corresponding to the speed of the vehicle 100. The vehicle speed sensor 112 outputs vehicle speed pulse information to the warning device 10. The GPS receiving unit 114 receives a signal from a GPS satellite (not shown) and measures the position where the vehicle 100 exists based on the received signal. The GPS receiving unit 114 outputs the measured position (hereinafter referred to as “position information”) to the warning device 10.

  The warning device 10 receives the traveling sound from the microphone 110, the vehicle speed pulse information from the vehicle speed sensor 112, and the position information from the GPS receiver 114, and determines whether or not the vehicle is running backward based on these. If it is determined that the vehicle is running backward, the warning device 10 outputs a warning sound from the speaker 116 and displays a screen showing the warning on the display unit 122. These warnings notify the driver of the danger.

  FIG. 2 shows a state in which the vehicle 100 is traveling backward. The main lane 200 is the main road of the highway, and the direction from right to left in FIG. 2 is the traveling direction. The exit path 202 is a road for exiting from the main lane 200 to a general road, and the arrow shown in FIG. A melody road 204 is laid on the exit path 202. Here, the vehicle 100 travels backward on the exit road 202, and particularly travels on the melody road 204. Therefore, the warning device 10 (not shown) mounted on the vehicle 100 performs the above-described process and notifies the driver of the warning.

  FIG. 3 shows the configuration of the warning device 10. The warning device 10 includes an acquisition unit 12 and a reception unit 14. A selection unit 16, a storage unit 18, and an output unit 20 are included. Acquisition unit 12 receives a running sound collected by microphone 110 mounted on vehicle 100. The acquisition part 12 starts sampling with respect to driving | running | working sound, when the magnitude | size of driving | running | working sound becomes more than fixed, and performs conversion to digital data. As a result, the acquisition unit 12 acquires “travel sound data” that is a travel sound converted into digital data. The acquisition unit 12 outputs the traveling sound data to the output unit 20.

  The receiving unit 14 receives vehicle speed pulse information acquired by the vehicle speed sensor 112 mounted on the vehicle 100. The reception unit 14 generates vehicle speed information together with the vehicle speed pulse information. A known technique may be used to generate the vehicle speed information based on the vehicle speed pulse information, and thus the description thereof is omitted here. The reception unit 14 outputs vehicle speed information to the selection unit 16.

  The storage unit 18 stores a plurality of reference data to be compared with the traveling sound data acquired by the acquisition unit 12 and corresponding to a case where the vehicle speed of the vehicle 100 is different from each other. Each reference data is stored as digital data. Here, the first reference data to the fourth reference data are stored as a plurality of reference data. The first reference data is traveling sound data generated from the melody road 204 when traveling at 10 km / h to 20 km / h. The second reference data is traveling sound data generated from the melody road 204 when traveling at 20 km / h to 30 km / h. The third reference data is traveling sound data generated from the melody road 204 when traveling at 30 km / h to 40 km / h. The fourth reference data is traveling sound data generated from the melody road 204 when traveling at 40 km / h to 50 km / h.

  The selection unit 16 selects at least one of the plurality of reference data stored in the storage unit 18 based on the vehicle speed information received in the reception unit 14. Here, for the sake of clarity, it is assumed that one reference data is selected. More specifically, the selection unit 16 selects reference data in which vehicle speed information is included in the speed range. For example, if the vehicle speed information is 25 km / h, the second reference data having a speed range of 20 km / h to 30 km / h is selected. The selection unit 16 outputs the selected reference data to the output unit 20.

  The output unit 20 receives the running sound data from the acquisition unit 12 and the reference data from the selection unit 16. The output unit 20 compares the running sound data with the reference data. Here, the difference between the running sound data and the reference data is calculated at each sampling timing, and the difference is integrated over a predetermined interval. If the accumulated difference is smaller than the threshold value, the output unit 20 determines the warning output. That is, the output unit 20 determines the warning output when the running sound data and the reference data are closer than the threshold value. For example, the threshold value is set to be 80% or more with respect to the matching rate at which the reference data and the running sound data match. Further, if the mismatch rate that does not match falls below 20%, the output unit 20 may determine the warning output.

  The output unit 20 stores the reverse running warning display data and the reverse running warning voice data in advance. When the output unit 20 determines the warning output, the output unit 20 displays the reverse running warning display data on the display unit 122. When the output unit 20 determines warning output, the output unit 20 causes the speaker 116 to output reverse running warning voice data. The acquisition unit 12 receives the vehicle speed information from the reception unit 14 and stops sampling when the vehicle speed information reaches 60 km / h or more.

  This configuration can be realized in terms of hardware by a CPU, memory, or other LSI of any computer, and in terms of software, it can be realized by a program loaded in the memory, but here it is realized by their cooperation. Draw functional blocks. Accordingly, those skilled in the art will understand that these functional blocks can be realized in various forms only by hardware, or by a combination of hardware and software.

  FIG. 4 is an external view of the interior of the vehicle 100 as viewed from the rear. In front of the passenger compartment, a driver seat 150 is disposed on the right side, a passenger seat (not shown) is disposed on the left side, and a handle 152 is disposed in front of the driver seat 150. In FIG. 4, the handle 152 and the driver's seat 150 are arranged on the right side, but these may be arranged on the left side. Further, a windshield 154 is disposed in front of the handle 152.

  The in-vehicle device 120 is installed on the side of the handle 152, for example, on the left center console 156. The in-vehicle device 120 may include the warning device 10 described above, and may not include the warning device 10. The in-vehicle device 120 is provided with a display unit 122. The display unit 122 displays, for example, an image of a car navigation system and also displays reverse running warning display data. The reverse running warning display data displayed on the display unit 122 is as shown in FIG. The speaker 116 is provided in the door and outputs reverse running warning voice data.

  The operation of the warning device 10 having the above configuration will be described. FIG. 6 is a flowchart showing a warning procedure by the warning device 10. If the level of the traveling sound is high (Y in S10), the acquisition unit 12 collects the traveling sound with the microphone 110 and converts it into digital data (S12). The acquisition unit 12 inputs vehicle speed pulse information and calculates the vehicle speed (S14). If the vehicle speed is 10 km / h to 20 km / h (Y in S16) and the running sound data matches the first reference data (Y in S18), the output unit 20 outputs a reverse running warning sound / display ( S32). The coincidence corresponds to a case where it is smaller than a threshold value.

  If the vehicle speed is not 10 km / h to 20 km / h (N in S16), the vehicle speed is 20 km / h to 30 km / h (Y in S20), and the running sound data matches the second reference data (Y in S22) The output unit 20 outputs a reverse running warning sound / display (S32). If the vehicle speed is not 20 km / h to 30 km / h (N in S20), the vehicle speed is 30 km / h to 40 km / h (Y in S24), and the running sound data matches the third reference data (Y in S26) The output unit 20 outputs a reverse running warning sound / display (S32). If the vehicle speed is not 30 km / h to 40 km / h (N in S24), the vehicle speed is 40 km / h to 50 km / h (Y in S28), and the running sound data matches the fourth reference data (Y in S30) The output unit 20 outputs a reverse running warning sound / display (S32). If the vehicle speed is not 60 km / h or higher (N in S34), the process returns to step 12.

  If the vehicle speed is 60 km / h or more (Y in S34), the process proceeds to step 36. If the running sound level is not high (N in S10), the process proceeds to step 36. If the vehicle speed is not 40 km / h to 50 km / h (N in S28), the process proceeds to step 36. If the running sound data does not match the first reference data (N in S18), the process proceeds to step 36. If the running sound data does not match the second reference data (N in S22), the process proceeds to step 36. If the running sound data does not match the third reference data (N in S26), the process proceeds to step 36. If the running sound data does not match the fourth reference data (N in S30), the process proceeds to step 36.

  A navigation device may be mounted on the vehicle 100. The warning device 10 described so far may operate in conjunction with the navigation device. Here, a modification in the case of interlocking will be described using FIG. The acquisition unit 12 receives position information from the GPS reception unit 114. The acquisition unit 12 refers to map data stored in a navigation device (not shown) and determines whether the received position information exists between the toll gate of the expressway and the main lane 200. When it is determined that the acquisition unit 12 exists, the acquisition unit 12 starts sampling the running sound and performs conversion to digital data. Subsequent processing is the same as before.

  Further, the acquisition unit 12 continues to receive the position information even after starting sampling. The acquisition unit 12 refers to map data stored in a navigation device (not shown) and determines whether the received position information exists in the main lane 200 of the expressway. The acquisition part 12 stops sampling, when it determines with existing.

  FIG. 7 is a flowchart showing another warning procedure by the warning device 10. If the acquisition unit 12 passes the toll gate (Y in S50), the traveling sound is collected by the microphone 110 and converted into digital data (S52). The acquisition unit 12 inputs vehicle speed pulse information and calculates the vehicle speed (S54). If the vehicle speed is 10 km / h to 20 km / h (Y in S56) and the running sound data matches the first reference data (Y in S58), the output unit 20 outputs a reverse running warning sound / display ( S72). The coincidence corresponds to a case where it is smaller than a threshold value.

  If the vehicle speed is not 10 km / h to 20 km / h (N in S56), the vehicle speed is 20 km / h to 30 km / h (Y in S60), and the running sound data matches the second reference data (Y in S62) ), The output unit 20 outputs a reverse running warning sound / display (S72). If the vehicle speed is not 20 km / h to 30 km / h (N in S60), the vehicle speed is 30 km / h to 40 km / h (Y in S64), and the running sound data matches the third reference data (Y in S66) ), The output unit 20 outputs a reverse running warning sound / display (S72). If the vehicle speed is not 30 km / h to 40 km / h (N in S64), the vehicle speed is 40 km / h to 50 km / h (Y in S68), and the running sound data matches the fourth reference data (Y in S70) ), The output unit 20 outputs a reverse running warning sound / display (S72). If the vehicle is not traveling in the main lane 200 (N in S74), the process returns to step 52.

  If the vehicle is traveling in the main lane 200 (Y in S74), the process proceeds to step 76. If it has not passed through the toll gate (N in S50), the process proceeds to step 86. If the vehicle speed is not 40 km / h to 50 km / h (N in S68), the process proceeds to step 86. If the running sound data does not match the first reference data (N in S58), the process proceeds to step 86. If the running sound data does not match the second reference data (N in S62), the process proceeds to step 86. If the running sound data does not match the third reference data (N in S66), the process proceeds to step 86. If the running sound data does not match the fourth reference data (N in S70), the process proceeds to step 86.

  According to the embodiment of the present invention, a warning is output when any of a plurality of reference data corresponding to the case where the vehicle speeds are different from each other is close to the traveling sound data, so that the vehicle speed becomes various values. Can also be detected as being close to the reference data. Even when the vehicle speed becomes various values, it is detected that the vehicle is close to the reference data, so that it is possible to notify the driver of a section that is dangerous to travel regardless of the vehicle speed. Moreover, since a sound and a screen are output as a warning, the driver can be alerted.

  Further, since any one of the plurality of reference data is selected based on the vehicle speed information acquired by the speed sensor, it is possible to improve the selection accuracy of the reference data to be compared. In addition, since the selection accuracy of the reference data to be compared is improved, the detection accuracy of the section that is dangerous to travel can be improved. Further, since any one of the plurality of reference data is selected based on the vehicle speed information acquired by the speed sensor, the processing amount can be reduced.

  In the above, this invention was demonstrated based on the Example. This embodiment is an exemplification, and it will be understood by those skilled in the art that various modifications can be made to each of those constituent elements or combinations of processing processes, and such modifications are also within the scope of the present invention. .

  In the embodiment of the present invention, the selection unit 16 selects any reference data based on the vehicle speed information. However, the present invention is not limited to this. For example, the selection unit 16 may not be provided. At that time, the output unit 20 compares each of the plurality of reference data with the running sound data. According to this modification, a warning can be output without receiving vehicle speed information.

  In the embodiment of the present invention, the selection unit 16 selects any reference data based on the vehicle speed information. However, the present invention is not limited to this. For example, the selection unit 16 may select two or more reference data based on the vehicle speed information. Specifically, for example, when the vehicle speed information is 29 km / h, the selection unit 16 may select the third reference data in addition to the second reference data. The output unit 20 compares each of the selected two or more reference data with the traveling sound data. According to this modification, a warning can be output even when the speed information includes an error.

  In the embodiment of the present invention, the storage unit 18 stores four types of reference data from the first reference data to the fourth reference data. However, the present invention is not limited to this. For example, the reference data stored in the storage unit 18 may be other than four types. According to this modification, the degree of freedom of configuration can be improved.

  DESCRIPTION OF SYMBOLS 10 warning device, 12 acquisition part, 14 reception part, 16 selection part, 18 memory | storage part, 20 output part, 100 vehicle, 110 microphone, 112 vehicle speed sensor, 114 GPS receiving part, 116 speaker, 120 vehicle-mounted apparatus, 122 display part.

Claims (2)

An acquisition unit for acquiring running sound data collected by a microphone mounted on the vehicle;
A storage unit that stores a plurality of reference data corresponding to a case in which the vehicle speed of the vehicle is different from each other and is a plurality of reference data to be compared with the traveling sound data acquired by the acquisition unit;
An output unit that outputs a warning when any of the plurality of reference data stored in the storage unit and the running sound data acquired in the acquisition unit are closer than a threshold value;
A warning device comprising: A reception unit for receiving vehicle speed information acquired by a vehicle speed sensor mounted on the vehicle;
A selection unit that selects at least one of the plurality of reference data stored in the storage unit based on the vehicle speed information received in the reception unit;
The output unit outputs a warning when at least one reference data selected by the selection unit and running sound data acquired by the acquisition unit are closer than a threshold value. Warning device as described in.

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