Vehicle

Abstract

To assess a state in a region where a vehicle stands still on a track.SOLUTION: A communication device 40 installed in a vehicle 80 transmits, to an analysis device 10, audio data generated by a first audio data generating device 30 in association with position specifying information and information for specifying whether the vehicle 80 stands still. The analysis device 10 analyzes the audio data generated when the vehicle 80 stands still. The audio data to be analyzed includes sound obtained by engine sound of the vehicle 80 being reflected on the road surface. Therefore, by analyzing this audio data, it is possible to assess a state of a track at the stationary point.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an analysis device, a vehicle, an analysis method, a program, and a storage medium. [Background technology]

[0002] Deterioration of a road affects the movement of vehicles. For this reason, deteriorated roads need to be repaired. Therefore, technology for measuring the deterioration of roads is being developed. For example, the technology described in Patent Document 1 acquires the acceleration in the height direction of a vehicle and evaluates the road surface condition of the road using peak information of this acceleration. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-128979 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the method described in Patent Document 1, in order to evaluate the condition of a road, a vehicle needs to travel on the road, so the condition cannot be evaluated for areas of the road where the moving object was stationary.

[0005] One example of the problem to be solved by the present invention is to be able to evaluate the state of an area of ​​a road where a vehicle has been stationary. [Means for solving the problem]

[0006] The present disclosure relates to a vehicle that is traveling on a road and is stopped, and an acquisition unit that acquires voice data including an engine sound of the vehicle and location identification information for identifying the location of the vehicle when the voice data is generated; a processing unit that generates condition data indicating a condition of the road surface at the position specified by the position specifying information by analyzing the voice data; The present invention also includes an analysis device comprising:

[0007] The present disclosure relates to an engine, A voice data generating device disposed at a position facing a road surface; a soundproofing member or a sound absorbing member disposed on the engine side surface of the sound data generating device; an output unit that outputs the voice data generated by the voice data generating device to an analysis device; It is a vehicle equipped with.

[0008] The present disclosure also provides a method for implementing a method of the present invention, comprising: Acquiring voice data including an engine sound of a vehicle traveling on a road when the vehicle is stationary, and location identification information for identifying a location of the vehicle when the voice data was generated; The analysis method includes analyzing the voice data to generate condition data indicating the condition of the road surface at the position specified by the position specifying information.

[0009] The present disclosure provides a computer-executable program, the computer comprising: A process of acquiring voice data including an engine sound of a vehicle traveling on a road when the vehicle is stationary, and location identification information for identifying the location of the vehicle when the voice data was generated; A process of generating condition data indicating a condition of the road surface at the position specified by the position specifying information by analyzing the voice data; It contains a program that executes the

[0010] The present disclosure includes a storage medium storing the above-mentioned program. [Brief description of the drawings]

[0011] [Figure 1]FIG. 1 is a diagram for explaining a usage environment of an analysis device according to a first embodiment. [Diagram 2] FIG. 2 illustrates an example of a functional configuration of an analysis device. [Diagram 3] FIG. 2 illustrates an example of a hardware configuration of an analysis device. [Figure 4] FIG. 2 is a diagram for explaining an example of an arrangement of a first voice data generating device in a vehicle. [Diagram 5] FIG. 11 is a diagram showing a configuration of a vehicle according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same components are given the same reference numerals and the description will be omitted as appropriate.

[0013] (First embodiment) 1 is a diagram for explaining a usage environment of an analysis device 10 according to a first embodiment. The analysis device 10 is a device that determines the state of a road by analyzing voice data. The analysis results of the analysis device 10 are stored in a storage unit 20.

[0014] The voice data to be analyzed is generated by a first voice data generating device 30 mounted on a vehicle 80. The vehicle 80 is an automobile or a two-wheeled motor vehicle, and has a communication device 40. The first voice data generating device 30 is disposed at a position where it can acquire a sound (hereinafter referred to as an engine reflected sound) of the engine sound of the vehicle 80 reflected by the road surface of the road. The voice data generated by the first voice data generating device 30 is linked to information (hereinafter referred to as a position specifying information) specifying the position where the voice data was generated, and is transmitted to the analysis device 10 via the communication device 40.

[0015] At this time, the communication device 40 further links the voice data to information for identifying whether the vehicle 80 was stationary when the voice data was generated, and transmits the linked voice data to the analysis device 10. This information may be information directly indicating whether the vehicle 80 was stationary or may be the above-mentioned location identification information. In the latter case, if there is no change in the location indicated by the location identification information, it can be determined that the vehicle 80 is stationary.

[0016] Here, the vehicle 80 being stationary refers to a state in which the engine of the vehicle 80 is running but the vehicle 80 is not moving. The position specifying information is generated, for example, by a GPS information receiving device and a GPS information analyzing device mounted on the vehicle 80, but may be generated using other methods. The position specifying information may indicate not only the position in the extension direction of the road, but also the position in the width direction of the road or lane.

[0017] The analysis device 10 processes the voice data generated when the vehicle 80 was stationary. Specifically, this voice data contains the engine reflected sound described above. This engine reflected sound reflects the state of the road, for example, the state of the road surface. Therefore, the analysis device 10 can generate data (hereinafter, referred to as state data) indicating the state of the position on the road where the vehicle 80 was stationary, by analyzing the engine reflected sound.

[0018] The analysis device 10 associates the voice data received from the communication device 40 with the location identification information and stores the associated data in the storage unit 20. Here, the voice data and the location identification information may be associated with each other using time information indicating the time when they were generated.

[0019] The communication device 40 may link only the voice data generated when the vehicle 80 is stationary with the location identification information and transmit the same to the analysis device 10. In this case, the analysis device 10 processes all of the voice data received from the communication device 40.

[0020] 2 is a diagram showing an example of a functional configuration of the analysis device 10. The analysis device 10 includes an acquisition unit 110 and a processing unit 120.

[0021] The acquisition unit 110 acquires the voice data and the position identification information from the storage unit 20. The processing unit 120 analyzes the voice data to determine the state of the road at the position where the voice data was generated. For example, the processing unit 120 stores in advance reference data, such as feature quantities, used when analyzing the voice data for each state of the road. The processing unit 120 then compares the voice data to be processed with the previously stored reference data, and determines the state of the road based on the reference data with the highest degree of agreement. For example, the processing unit 120 determines that the state corresponding to the reference data with the highest degree of agreement is the state of the road. The processing unit 120 then associates the determination result with the position identification information and stores it in the storage unit 20. Note that the position identification information associated with the determination result may indicate not only the position in the extension direction of the road, but also the position in the width direction of the road or lane.

[0022] The reference data stored in advance in the processing unit 120 is preferably determined for each type of vehicle 80. In this case, the communication device 40 transmits, together with the voice data, information for identifying the type of vehicle 80 in which the communication device 40 is mounted to the analysis device 10. This information for identifying the type of vehicle may be information directly indicating the type of vehicle, or may be the vehicle registration number of the vehicle 80. The processing unit 120 then uses the transmitted information to read out the reference data to be used for analysis.

[0023] Furthermore, the reference data pre-stored in the processing unit 120 is preferably determined for each engine speed. In this case, the analysis device 10 transmits rotation speed data indicating the engine speed together with the voice data to the analysis device 10. The processing unit 120 then reads out the reference data corresponding to the transmitted rotation speed data. Note that the reference data pre-stored in the processing unit 120 may be determined for each vehicle type and each engine speed.

[0024] FIG. 3 is a diagram showing an example of a hardware configuration of the analysis device 10. The main configuration of the analysis device 10 is realized using an integrated circuit. This integrated circuit has a bus 402, a processor 404, a memory 406, a storage device 408, an input / output interface 410, and a network interface 412. The bus 402 is a data transmission path for the processor 404, the memory 406, the storage device 408, the input / output interface 410, and the network interface 412 to transmit and receive data to and from each other. However, the method of connecting the processor 404 and the like to each other is not limited to bus connection. The processor 404 is an arithmetic processing device realized using a microprocessor or the like. The memory 406 is a memory realized using a RAM (Random Access Memory) or the like. The storage device 408 is a storage device realized using a ROM (Read Only Memory), a flash memory, or the like.

[0025] The input / output interface 410 is an interface for connecting the analysis device 10 to a peripheral device, such as the storage unit 20. In this figure, the input / output interface 410 is an example of the acquisition unit 110.

[0026] Network interface 412 is an interface for connecting analysis device 10 to a communication network. Note that the method for connecting network interface 412 to the communication network may be wireless connection or wired connection.

[0027] Storage device 408 stores program modules for implementing each functional element of analysis device 10 and reference data used when analyzing voice data. Processor 404 implements each function of analysis device 10 by reading these program modules into memory 406 and executing them.

[0028] Note that the hardware configuration of the integrated circuit described above is not limited to the configuration shown in this drawing. For example, the program module may be stored in the memory 406. In this case, the integrated circuit may not include the storage device 408.

[0029] FIG. 4 is a diagram for explaining an example of the arrangement of the first voice data generating device 30 in the vehicle 80. In addition to the first voice data generating device 30 and the communication device 40 described above, the vehicle 80 has an engine 82 and a soundproofing or sound-absorbing member 84. The first voice data generating device 30 is arranged on the back side of the vehicle 80, that is, at a position facing the road surface of the road. For example, the first voice data generating device 30 is arranged on the back side of the body. When viewed in the longitudinal direction of the vehicle 80, the soundproofing or sound-absorbing member 84 is arranged on the engine 82 side of the first voice data generating device 30. For example, the soundproofing or sound-absorbing member 84 may be attached to the surface of the engine 82 of the first voice data generating device 30, or may be arranged in an area within 30 cm from the first voice data generating device 30. By providing the soundproofing or sound-absorbing member 84, it is possible to suppress the engine sound generated by the engine 82 from directly entering the first voice data generating device 30.

[0030] In addition, in the longitudinal direction of the vehicle 80, i.e., the front-rear direction, the engine 82, the center C of the vehicle 80, and the first sound data generation device 30 are arranged in this order. In this manner, it is possible to prevent engine sound generated by the engine 82 from directly entering the first sound data generation device 30. The soundproofing or sound absorbing member 84 is located between the center C and the first sound data generation device 30.

[0031] Furthermore, it is preferable that the distance from the engine 82 to the first voice data generation device 30 is 1 m or more. This also makes it possible to prevent the engine sound generated by the engine 82 from directly entering the first voice data generation device 30.

[0032] As described above, according to this embodiment, the communication device 40 mounted on the vehicle 80 transmits the voice data generated by the first voice data generating device 30 to the analysis device 10 in association with the position identification information and information for identifying whether the vehicle 80 was stationary or not. The analysis device 10 analyzes the voice data generated when the vehicle 80 was stationary. The voice data to be analyzed includes the sound of the engine sound of the vehicle 80 reflected by the road surface. Therefore, by analyzing this voice data, the state of the road at the stationary point can be determined. Therefore, the state of the area of ​​the road where the vehicle 80 was stationary can be evaluated.

[0033] Second Embodiment FIG. 5 is a diagram showing the configuration of a vehicle 80 according to the second embodiment, and corresponds to FIG. 4 in the first embodiment. The vehicle 80 according to this embodiment has the same configuration as the vehicle 80 according to the first embodiment, except that it includes a second voice data generating device 32. The voice data generated by the second voice data generating device 32 (hereinafter, referred to as the second voice data) is linked to the voice data generated by the first voice data generating device 30 at the same timing (hereinafter, referred to as the first voice data) and transmitted to the analysis device 10. This linking is performed, for example, via time data indicating the generation timing of each voice data. In this case, both the first voice data and the second voice data are linked to the time data and transmitted to the analysis device 10. The analysis device 10 links the received second voice data to the first voice data and stores them in the storage unit 20.

[0034] The acquisition unit 110 of the analysis device 10 reads out the second voice data together with the first voice data from the storage unit 20. Then, the processing unit 120 generates status data using the first voice data and the second voice data generated, for example, at the same timing.

[0035] The second voice data generating device 32 is closer to the engine 82 and closer to the road surface than the first voice data generating device 30. The proportion of sounds directly coming from the engine 82 in the sounds included in the voice data (second voice data) generated by the second voice data generating device 32 is lower than that of the voice data (first voice data) generated by the first voice data generating device 30. Therefore, the processing unit 120 calculates the difference between the first voice data and the second voice data, and this calculation result is used as the analysis target. In this way, the proportion of sounds directly coming from the engine 82 is reduced in the data to be analyzed, i.e., noise is reduced, so that the road surface condition can be analyzed with high accuracy.

[0036] The processing unit 120 may calculate a difference between one of the first voice data and the second voice data multiplied by a predetermined coefficient and the other data, and use this calculation result as the analysis target. The coefficient used here is determined for each model of the analysis device 10, for example, and is stored in advance in the analysis device 10.

[0037] Although the embodiment and examples have been described above with reference to the drawings, these are merely examples of the present invention, and various configurations other than those described above can also be adopted. [Explanation of symbols]

[0038] 10 Analysis device 20 Memory section 30 First voice data generating device 32 Second audio data generating device 40 Communication Equipment 80 vehicles 82 Engine 84 Sound absorbing materials 110 Acquisition Department 120 Processing section

Claims

[Claim 1] The engine, A voice data generating device disposed at a position facing a road surface; a soundproofing member or a sound absorbing member disposed on the engine side surface of the sound data generating device; an output unit that outputs the voice data generated by the voice data generating device to an analysis device; A vehicle equipped with.

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