JP6789373B2 - Information processing equipment, infrastructure deterioration judgment method, and programs - Google Patents

Description

The present invention relates to an in-vehicle device, an information processing device, an information collecting method, a method for determining deterioration of infrastructure, and a program.

Technology has been developed that utilizes information that can be collected while a vehicle, such as an automobile, is running. For example, Patent Document 1 discloses a technique for mapping a road surface damage state by transmitting a vibration measurement value in a vertical direction during traveling of a vehicle to a management device together with a measurement position. Further, Patent Document 2 below discloses a technique for collecting and analyzing running noise as a technique for detecting an abnormality in an expansion joint for a bridge.

Japanese Unexamined Patent Publication No. 2016-095184 Japanese Unexamined Patent Publication No. 2011-242294

In the technique of Patent Document 1, the vibration measurement value in the vertical direction is used, but the vibration in the vertical direction can be detected not only by the state of the road surface itself but also by an obstacle on the road. Therefore, vibration (noise) caused by obstacles on the road may reduce the accuracy of determining the damage status of the road surface. If the accuracy of determining the damage status of the road surface is lowered, for example, even if the vehicle is assisted in safe driving based on the determination of the road surface damage, there is a possibility that the assistance will actually be erroneous.

The present invention has been made in view of the above-mentioned problems, and one object of the present invention is to provide a technique capable of accurately discriminating the deterioration state of a road surface, for example, not to reduce the accuracy of a function that supports safe driving. And.

The invention according to claim 1
A sound collecting part that collects road noise when the vehicle is running,
A transmission unit that transmits the road noise to an external device in association with the sound collection position information indicating the position where the sound collection unit collects the road noise.
It is an in-vehicle device provided with.

The invention according to claim 10
The acquisition unit that acquires the road noise collected by the in-vehicle device from the in-vehicle device by associating it with the sound collecting position information indicating the sound collecting position of the road noise.
A determination unit that determines the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information.
It is an information processing device provided with.

The invention according to claim 21
A method of collecting information performed by a computer
The sound collection process that collects road noise when the vehicle is running,
A transmission step of transmitting the road noise to an external device in association with the sound collection position information indicating the sound collection position of the road noise.
It is an information gathering method having.

The invention according to claim 22
A method of determining the deterioration of infrastructure executed by a computer.
The acquisition process of associating the road noise collected by the in-vehicle device with the sound collecting position information indicating the sound collecting position of the road noise and acquiring the sound from the in-vehicle device.
A determination step of determining the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information.
It is a method of judging the deterioration of the infrastructure that has.

The invention according to claim 23
Sound collecting means for collecting road noise when the vehicle is running, and
A transmission means for transmitting the road noise to an external device in association with the sound collection position information indicating the sound collection position of the road noise.
It is a program to function as.

The invention according to claim 24
Computer,
The acquisition means for acquiring the road noise collected by the in-vehicle device in association with the sound collection position information indicating the sound collection position of the road noise, and the acquisition means acquired from the in-vehicle device, and
A determination means for determining the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information.
It is a program to function as.

The above-mentioned objectives and other objectives, features and advantages will be further clarified by the preferred embodiments described below and the accompanying drawings below.

It is a figure which illustrates the use environment of the vehicle-mounted device which concerns on this invention. It is a figure which illustrates the system structure of the information gathering system in 1st Embodiment. It is a figure which illustrates the hardware configuration of the in-vehicle device. It is a figure which illustrates the hardware configuration of the information processing apparatus. It is a flowchart which illustrates the process flow of the vehicle-mounted device of 1st Embodiment. It is a flowchart which illustrates the process flow of the information processing apparatus of 1st Embodiment. It is a figure which illustrates the system structure of the information gathering system in 2nd Embodiment. It is a flowchart which illustrates the process flow of the information processing apparatus of 2nd Embodiment. It is a flowchart which illustrates the process flow of the vehicle-mounted device of 2nd Embodiment. It is a flowchart which illustrates the process flow of the vehicle-mounted device of 2nd Embodiment. It is a figure which illustrates the system structure of the information gathering system in 3rd Embodiment. It is a flowchart which illustrates the process flow of the information processing apparatus of 3rd Embodiment. It is a flowchart which illustrates the process flow of the vehicle-mounted device of 3rd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all drawings, similar components are designated by the same reference numerals, and description thereof will be omitted as appropriate. Further, unless otherwise specified, each block in the block diagram represents a functional unit configuration, not a hardware unit configuration.

[Overview]
FIG. 1 is a diagram illustrating a usage environment of the in-vehicle device 200 according to the present invention. Note that FIG. 1 is a diagram for facilitating the understanding of the vehicle-mounted device 200, and does not limit the operation of the vehicle-mounted device 200 at all.

The vehicle 500 is an arbitrary vehicle such as an automobile. When the vehicle 500 is traveling, sound (road noise) is generated by the contact between the wheels of the vehicle 500 and the road surface of the traveling road (for example, an infrastructure such as a road). As the infrastructure deteriorates, the condition of the road surface (unevenness, etc.) changes, and the road noise generated when the vehicle 500 travels changes. Therefore, the road noise can be used as an index for judging the deterioration state of the infrastructure.

Therefore, as shown in FIG. 1, on the outer peripheral portion of the vehicle 500, a sound collecting unit 202 (for example, a microphone) that picks up the sound generated when the vehicle 500 is running (road noise generated when the vehicle 500 is running) is used. An in-vehicle device 200 having the above is provided. Not limited to the example of FIG. 1, the sound collecting unit 202 (microphone) and the in-vehicle device 200 may be separate devices connected by wire or wirelessly. In this case, only the sound collecting unit 202 may be arranged outside the vehicle 500, and the in-vehicle device 200 may be arranged inside the vehicle.

In the following embodiments, an in-vehicle device 200 that collects road noise and an information processing device that determines the state of the infrastructure using the road noise collected by the in-vehicle device 200 will be described.

[First Embodiment]
〔System configuration〕
FIG. 2 is a diagram illustrating a system configuration of the information collection system 1 according to the first embodiment. As shown in FIG. 2, the vehicle-mounted device 200 and the information processing device 400 are included. The in-vehicle device 200 and the information processing device 400 are communicably connected to each other via a network.

<Functional configuration of in-vehicle device 200>
As shown in FIG. 2, the in-vehicle device 200 includes a sound collecting unit 202 and a transmitting unit 204. The sound collecting unit 202 is a so-called microphone. The sound collecting unit 202 picks up the sound (road noise) generated when the vehicle 500 is running, converts the vibration caused by the sound into an electric signal, and generates sound data. The transmission unit 204 transmits the sound data generated by the sound collection unit 202 to the external device in association with the position where the road noise is picked up (hereinafter, also referred to as “sound collection position”). In this embodiment, the external device is the information processing device 400.

Here, the sound picked up by the sound collecting unit 202 may include sounds other than road noise. Road noise includes frequencies in the band, for example, 100 to 500 Hz. Therefore, it is preferable that the transmission unit 204 further includes a filter unit (not shown) that extracts the sound in the frequency band of the road noise by passing the sound picked up by the sound collection unit 202 through the frequency filter. In this case, the transmission unit 204 transmits the sound data of the sound in the frequency band of the road noise extracted by the filter unit to the information processing device 400.

<Functional configuration of information processing device 400>
As shown in FIG. 2, the information processing apparatus 400 includes an acquisition unit 402 and a determination unit 404. The acquisition unit 402 acquires the sound data of the road noise collected by the in-vehicle device 200 in association with the sound collection position information indicating the sound collection position of the road noise. The determination unit 404 analyzes the sound data of the road noise associated with the sound collection position information for the deterioration state of the infrastructure (for example, a road) at the position indicated by the sound collection position information acquired by the acquisition unit 402. Judge by doing. The details of the analysis process by the determination unit 404 will be described later.

As described above, in the present embodiment, the sound data of the road noise collected by the in-vehicle device 200 is associated with the information indicating the sound collection position of the road noise, and the information processing device that analyzes the deterioration state of the infrastructure is performed. It is sent to 400. Then, the information processing device 400 analyzes the deterioration state of the infrastructure using the sound data of the road noise acquired from the in-vehicle device 200. Since the road noise sound data acquired from the in-vehicle device 200 is associated with information indicating the sound collection position of the road noise, the position where the analysis result (infrastructure deterioration state) of the sound data is located. It is possible to identify whether it is the corresponding one. That is, according to the information gathering system of the present embodiment, it is possible to grasp the deterioration state of the infrastructure in various places.

Hereinafter, the first embodiment will be described in more detail.

[Hardware configuration of in-vehicle device 200]
Each functional component of the in-vehicle device 200 may be realized by hardware (eg, a hard-wired electronic circuit) that realizes each functional component, or a combination of hardware and software (eg, electronic). It may be realized by a combination of a circuit and a program that controls it). Hereinafter, a case where each functional component of the in-vehicle device 200 is realized by a combination of hardware and software will be further described.

FIG. 3 is a diagram illustrating a hardware configuration of the in-vehicle device 200. The computer 100 is a computer that realizes the in-vehicle device 200. For example, the computer 100 is an ECU (Electronic Control Unit) that controls various hardware provided in the vehicle 500. Further, for example, the computer 100 may be a car navigation device provided in the vehicle 500. Further, the computer 100 may be a computer specially designed to realize the in-vehicle device 200, or may be a general-purpose computer. When the computer 100 is specially designed, the computer 100 may be configured to be attached to the outer peripheral portion of the vehicle, preferably the lower surface of the outer peripheral portion of the vehicle.

The computer 100 has a bus 102, a processor 104, a memory 106, a storage device 108, an input / output interface 110, and a network interface 112. The bus 102 is a data transmission line for the processor 104, the memory 106, the storage device 108, the input / output interface 110, and the network interface 112 to transmit and receive data to and from each other. However, the method of connecting the processors 104 and the like to each other is not limited to the bus connection. The processor 104 is an arithmetic processing device realized by using a microprocessor, a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), or the like. The memory 106 is a main storage device realized by using a RAM (Random Access Memory) or the like. The storage device 108 is an auxiliary storage device realized by using a ROM (Read Only Memory), a flash memory, or the like. However, the storage device 108 may be configured with the same hardware as the hardware constituting the main storage device, such as RAM.

The input / output interface 110 is an interface for connecting the computer 100 to peripheral devices. In FIG. 3, a microphone 1101 and a GPS module 1102 are connected to the input / output interface 110. The microphone 1101 realizes at least a part of the functions of the sound collecting unit 202 described above. The GPS module 1102 generates vehicle position information. The position information generated by the GPS module 1102 can be used as the above-mentioned sound collection position information by corresponding to the timing when the sound is picked up by the microphone 1101.

Various analog signals and digital signals used for controlling the vehicle 500 are input or output to the computer 100 via the input / output interface 110. For example, the audio signal output from the microphone 1101 is input to the computer 100 via the input / output interface 110. The microphone 1101 may be connected via a network interface 112 that supports a wireless communication standard such as Bluetooth (registered trademark).

The input / output interface 110 appropriately includes an A / D converter that converts an analog input signal into a digital signal, a D / A converter that converts a digital output signal into an analog signal, and the like. For example, when the audio signal output from the microphone 1101 is an analog signal, the analog signal is converted into a digital signal by the A / D converter included in the input / output interface 110, and the digital signal is processed by the processor 104.

The input / output interface 110 may further include a filter circuit 1103 that extracts frequency components in a predetermined band. The filter circuit 1103 realizes the function of the above-mentioned filter unit. The filter circuit 1103 is configured to be capable of extracting a frequency band of road noise, for example, a band of 100 to 500 Hz, which is not particularly limited. When extracting this frequency band, for example, as the filter circuit 1103, a low-pass filter having a cutoff frequency near 1 kHz and extracting a frequency component of 1 kHz or less can be used. Further, the filter circuit 1103 may be a bandpass filter including 100 to 500 Hz in the pass band (eg, a bandpass filter including 50 Hz to 1 kHz in the pass band). Further, not limited to the example given here, the filter circuit 1103 may be configured so as to be able to extract sounds in the target frequency band. The filter circuit 1103 can also be called a processing unit that processes road noise.

The network interface 112 is an interface for connecting the computer 100 to the communication network. This communication network is, for example, a CAN (Controller Area Network) communication network or a WAN (Wide Area Network). The method of connecting the network interface 112 to the communication network may be a wireless connection or a wired connection.

The storage device 108 stores a program module for realizing each functional component of the vehicle-mounted device 200. The processor 104 realizes the function of the in-vehicle device 200 by reading the program module into the memory 106 and executing the program module.

The hardware configuration of the computer 100 that realizes the in-vehicle device 200 is not limited to the example of FIG. For example, the in-vehicle device 200 may be configured to be mountable on the outer peripheral portion of the vehicle by using a mounting member or the like. By attaching the in-vehicle device 200 provided with the microphone 1101 to the lower part of the vehicle, it becomes difficult for unrelated sounds from other vehicles around the vehicle to enter, and road noise can be efficiently picked up. In this case, the vehicle-mounted device 200 may further include a support member configured so that the microphone 1101 is directed toward the road surface below the vehicle when the vehicle-mounted device 200 is attached to the vehicle. With this configuration as well, road noise can be picked up efficiently.

[Hardware configuration of information processing device 400]
Each function component of the information processing apparatus 400 may be realized by hardware (eg, a hard-wired electronic circuit) that realizes each function component, or a combination of hardware and software (example:). It may be realized by a combination of an electronic circuit and a program that controls it). Hereinafter, a case where each functional component of the information processing apparatus 400 is realized by a combination of hardware and software will be further described.

FIG. 4 is a diagram illustrating a hardware configuration of the information processing device 400. The computer 300 is a computer that realizes the information processing device 400. The computer 300 may be a computer specially designed to realize the information processing device 400, or may be a general-purpose computer.

The computer 300 has a bus 302, a processor 304, a memory 306, a storage device 308, an input / output interface 310, and a network interface 312. The bus 302 is a data transmission line for the processor 304, the memory 306, the storage device 308, the input / output interface 310, and the network interface 312 to transmit and receive data to and from each other. However, the method of connecting the processors 304 and the like to each other is not limited to the bus connection. The processor 304 is an arithmetic processing device realized by using a microprocessor, a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), or the like. The memory 306 is a main storage device realized by using a RAM (Random Access Memory) or the like. The storage device 308 is an auxiliary storage device realized by using a ROM (Read Only Memory), a flash memory, or the like. However, the storage device 108 may be configured with the same hardware as the hardware constituting the main storage device, such as RAM.

The input / output interface 310 is an interface for connecting the computer 300 to the peripheral device 35. In FIG. 4, the input / output interface 310 is connected to an input device 352 such as a keyboard and a mouse, a display device 354 such as an LCD (Liquid Crystal Display), and a touch panel in which these input devices 352 and the display device 354 are integrated. ing.

The network interface 312 is an interface for connecting the computer 300 to the communication network. This communication network is, for example, WAN (Wide Area Network). The method of connecting the network interface 312 to the communication network may be a wireless connection or a wired connection.

The storage device 308 stores a program module for realizing each functional component of the information processing device 400. The processor 304 realizes the function of the information processing device 400 by reading the program module into the memory 306 and executing the program module.

[Operation example]
The flow of processing in the first embodiment will be described with reference to FIGS. 5 and 6. FIG. 5 is a flowchart illustrating the processing flow of the in-vehicle device 200 of the first embodiment. FIG. 6 is a flowchart illustrating the processing flow of the information processing apparatus 400 of the first embodiment.

<Operation example of in-vehicle device 200>
First, the processing flow of the in-vehicle device 200 according to the first embodiment will be described with reference to FIG.

The sound collecting unit 202 uses the microphone 1101 to pick up the sound (road noise) generated when the vehicle is running, and generates sound data (S102). Further, the sound collecting unit 202 acquires the position information from the GPS module 1102 and associates it with the sound data generated in S102 as the sound collecting position information indicating the position where the sound (road noise) is picked up (S104).

In the processing of S104, the sound collecting unit 202 receives time information indicating the time when the sound (road noise) is picked up, environmental information indicating the environment where the sound (road noise) is picked up (eg, weather, vehicle speed, etc.), or , The vehicle type information indicating the vehicle type of the vehicle on which the in-vehicle device 200 is mounted may be further acquired and associated with the sound data. The sound collecting unit 202 can acquire time information from, for example, a clock unit (not shown) provided in the computer 100 or the GPS module 1102. Further, the sound collecting unit 202 can acquire weather information near the current position of the vehicle from a server device or the like on the network via the network interface 112. Further, the sound collecting unit 202 can acquire sensing information of sensors mounted on the vehicle (for example, raindrop sensor, illuminance sensor, humidity sensor, etc.) as information on the weather via the network interface 112. In addition, the sound collecting unit 202 can acquire vehicle speed information and the like from an ECU connected via the network interface 112. Further, for example, by performing a pre-registration operation of the vehicle type information and storing the vehicle type information in the memory 106 or the like in advance, the sound collecting unit 202 acquires the vehicle type information stored in the memory 106 or the like as necessary. be able to.

The sound collecting unit 202 may temporarily store the sound data and the information associated with the sound data in a storage area such as the storage device 108, or the transmission unit 204 may transmit the sound data to the information processing device 400. You may pass it.

The transmission unit 204 transmits the voice data generated in S102 to the information processing device 400 together with the sound collection position information associated with the voice data (S106). When the time information and the environmental information are acquired in the process of S104, the transmission unit 204 can further associate the time information and the environmental information with the voice information and transmit the time information and the environmental information to the information processing apparatus 400.

The destination information (for example, IP (Internet Protocol) address) of the information processing apparatus 400 is registered in advance in, for example, the memory 106. The transmission unit 204 may execute the processing of S106 at a predetermined timing, or may execute the processing of S106 according to the timing when the sound collecting unit 202 picks up the road noise. In the former case, the voice data and each information associated with the voice data are stored in the storage device 108 or the like, and the transmission unit 204 stores the voice data and each information associated with the voice data in the storage device 108. Etc. and transmit it to the information processing apparatus 400. The transmission unit 204 can delete the information transmitted to the information processing device 400 from the storage device 108 and the like. Further, in the latter case, the voice data and the information associated with the voice data are passed from the sound collecting unit 202 to the transmitting unit 204.

<Operation example of information processing device 400>
Next, the processing flow of the information processing apparatus 400 according to the first embodiment will be described with reference to FIG.

The acquisition unit 402 acquires the information (voice data and each information associated with the voice data) transmitted from the vehicle-mounted device 200 (S202). The information acquired by the acquisition unit 402 is stored in the storage device 308 and the like, and is used for processing by the determination unit 404 described later.

The determination unit 404 reads out the voice data (hereinafter, also referred to as “comparison target data”) stored in the storage device 308 or the like in response to an execution instruction by the operator of the information processing device 400, and performs an infrastructure deterioration determination process. Execute (S204). The determination unit 404 uses the analysis result (for example, frequency distribution) of the audio data stored in the storage device 308 or the like as a reference for road noise data (hereinafter, “reference noise data”) when determining deterioration of the infrastructure. Also referred to as).

The reference noise data is, for example, sample data of road noise when traveling on a normal road surface. In addition to this, even if the reference noise data is road noise sound data that is collected at a time earlier than the road noise corresponding to the comparison target data and has the same associated sound collection position information. Good. The reference noise data is stored in advance in, for example, the memory 306 or the storage device 308. Then, the determination unit 404 can determine, for example, the deterioration state of the infrastructure such as a road based on the degree of the difference (difference in road noise) obtained from the comparison result. As an example, the determination unit 404 can compare the difference obtained from the comparison result with the threshold value as a determination criterion to determine whether or not the infrastructure has deteriorated. As another example, the threshold value as a determination criterion may be provided in a plurality of stages. In this case, the determination unit 404 can determine the deterioration state of the infrastructure at a stepwise level from the comparison result between the plurality of threshold values and the difference obtained from the comparison result. Further, as another example, the determination unit 404 may generate a difference obtained from the comparison result, a numerical value obtained by converting the difference according to a specific criterion, or the like as a score as a determination index of the deterioration state.

Further, the determination unit 404 may use the sound data of the road noise at a plurality of past time points as the reference noise data. Specifically, the determination unit 404 includes the sound data of the road noise (first past road noise) collected before the first time before the road noise corresponding to the comparison target data, and the first one. The sound data of the road noise (second past road noise) collected before the second time, which is a time earlier than the time, can be used as the reference noise data. In this case, the determination unit 404 compares the comparison target data with the reference noise data corresponding to the first past road noise, and also compares the comparison target data with the reference noise data corresponding to the second past road noise. By comparing, it is possible to judge the deterioration state of the infrastructure. Although the case where a plurality of past time points are two is illustrated here, the determination unit 404 may use three or more past road noise sound data as reference noise data. By doing so, the change in road noise over a certain period can be compared with the passage of time, and the deterioration state of the infrastructure can be judged with higher accuracy.

In the process of S202, it is assumed that the sound collecting unit 202 acquires the voice data associated with the time information indicating the sound collecting time of the road noise, and stores the voice data in the storage device 308 or the like together with the time information. .. In this case, the determination unit 404 can classify the voice data stored in the storage device 308 or the like based on the time information associated with the voice data. For example, the determination unit 404 can classify the voice data stored in the storage device 308 or the like into, for example, by time zone, based on the time information associated with the voice data. Then, the determination unit 404 can analyze the road noise for each classification based on the time information. Here, even in the same place, the sound collecting environment (for example, whether or not other noise sources (oncoming vehicles, pedestrians, etc.) exist, how much other noise sources exist, etc.) differs depending on the time of day. The characteristics of the sound collected by the sound collecting unit 202, which is obtained, also change. If the configuration described here is adopted, the road noise can be classified in more detail, and the deterioration state of the infrastructure can be judged with high accuracy.

Further, in the processing of S202, the sound collecting unit 202 acquires the voice data associated with the environmental information (the weather at the time of collecting the sound, the speed of the vehicle at the time of collecting the sound, etc.) when the road noise is collected. , It is assumed that the voice data is stored in the storage device 308 or the like together with the time information. In this case, the determination unit 404 can classify the voice data stored in the storage device 308 or the like based on the environmental information associated with the voice data. For example, the determination unit 404 can classify the voice data stored in the storage device 308 or the like by the weather based on the environmental information about the weather associated with the voice data. Further, for example, the determination unit 404 can classify the voice data stored in the storage device 308 or the like according to the speed of the vehicle based on the environmental information regarding the speed of the vehicle associated with the voice data. Then, the determination unit 404 can analyze the road noise for each classification based on the environmental information. Here, if the weather is different, the characteristics of the sound collected by the sound collecting unit 202 also change. For example, the characteristics of the sound collected by the sound collecting unit 202 change according to each weather, such as when the weather is sunny, when it is raining, and when the wind is strong / weak. Further, the characteristics of the sound collected by the sound collecting unit 202 change according to the speed of the vehicle. If the configuration described here is adopted, the road noise can be classified in more detail, and the deterioration state of the infrastructure can be judged with high accuracy.

In the process of S202, the sound collecting unit 202 acquires the voice data associated with the vehicle type information indicating the type of the vehicle in which the in-vehicle device 200 is arranged, and transfers the voice data to the storage device 308 or the like together with the vehicle type information. Suppose you remembered it. In this case, the determination unit 404 can classify the voice data stored in the storage device 308 or the like based on the vehicle type information associated with the voice data. For example, the determination unit 404 can classify the voice data stored in the storage device 308 or the like into categories such as vehicle type and vehicle weight based on the vehicle type information associated with the voice data. Then, the determination unit 404 can analyze the road noise for each classification based on the vehicle type information. Here, if the vehicle type is different, the characteristics of the vehicle (for example, the weight of the vehicle, the number of wheels, the wheelbase, etc.) change, and the characteristics of the sound collected by the sound collecting unit 202 also change accordingly. If the configuration described here is adopted, the road noise can be classified in more detail, and the deterioration state of the infrastructure can be judged with high accuracy.

Further, the sound collected by the sound collecting unit 202 may include noise other than road noise. For example, when there is a puddle on the road surface or some object is falling, if the vehicle passes over it, noise caused by them is generated and can be collected by the sound collecting unit 202. In order to remove such noise, the determination unit 404 determines that the analysis result of the sound data in a specific time zone is the sound data in another time zone (for example, the time zone immediately before the specific time zone). It may be configured to determine whether or not it differs from the analysis result. Specifically, when a difference of a predetermined value or more is detected as a result of comparing the analysis result of the sound data in a specific time zone with the analysis result of the sound data in another time zone, the determination unit 404 performs the identification. Sound data during this time period can be excluded from the factors that determine the deterioration state of the infrastructure. By doing so, it is possible to exclude sound data containing obvious noise from the analysis target and determine the deterioration state of the infrastructure with high accuracy.

The determination unit 404 stores the analysis result of the deterioration state of the infrastructure by the processing of S204 in a predetermined storage unit (for example, storage device 308 or the like) (S206). By doing so, it is possible to feed back the results of this analysis to the next and subsequent analyzes.

[Second Embodiment]
The present embodiment has the same configuration as the first embodiment except for the following points.

〔System configuration〕
FIG. 7 is a diagram illustrating a system configuration of the information collection system 1 according to the second embodiment. As shown in FIG. 7, the vehicle-mounted device 200 and the information processing device 400 are included. The in-vehicle device 200 and the information processing device 400 are communicably connected to each other via a network.

<Functional configuration of in-vehicle device 200>
The in-vehicle device 200 of the present embodiment further includes a designated position information acquisition unit 206 in addition to the configuration of the first embodiment. The designated position information acquisition unit 206 acquires designated position information indicating a position designated by the information processing device 400 (external device).

The transmission unit 204 of the present embodiment transmits the sound data of the road noise picked up by the sound collecting unit 202 to the information processing device 400 at the position corresponding to the position indicated by the designated position information acquired by the designated position information acquisition unit 206. It is configured to do. The specific operation of the transmitter 204 will be described later.

<Functional configuration of information processing device 400>
The information processing device 400 of the present embodiment further includes a designated position information transmitting unit 406. The designated position information transmission unit 406 receives the designated position input via, for example, an input device 352 connected to the input / output interface 310. Then, the designated position information transmission unit 406 transmits information indicating the input position (designated position information) to the in-vehicle device 200. The designated position information transmission unit 406 is a processing unit paired with the above-mentioned designated position information acquisition unit 206.

[Hardware configuration of in-vehicle device 200]
The vehicle-mounted device 200 of this embodiment has the same hardware configuration as that of the first embodiment (example: FIG. 3). In the present embodiment, the storage device 108 further stores a program module for realizing the function of the designated position information acquisition unit 206. The processor 104 further realizes the function of the designated position information acquisition unit 206 by reading this program module into the memory 106 and executing it.

[Hardware configuration of information processing device 400]
The information processing device 400 of the present embodiment has the same hardware configuration as that of the first embodiment (example: FIG. 4). In the present embodiment, the storage device 308 further stores a program module for realizing the function of the designated position information transmitting unit 406. The processor 304 further realizes the function of the designated position information transmitting unit 406 by reading the program module into the memory 306 and executing the program module.

[Operation example]
The flow of processing in the second embodiment will be described with reference to FIGS. 8 to 10. FIG. 8 is a flowchart illustrating the processing flow of the information processing apparatus 400 of the second embodiment. 9 and 10 are flowcharts illustrating the processing flow of the in-vehicle device 200 of the second embodiment.

<Operation example of information processing device 400>
First, the processing flow of the information processing apparatus 400 according to the second embodiment will be described with reference to FIG. The process described below is a flow of processes until the designated position information is transmitted to the in-vehicle device 200.

The designated position information transmitting unit 406 receives an input operation of the designated position information via the input device 352 or the like (S302). For example, when the position coordinates (x, y) are input by the operation of the operator of the information processing apparatus 400, the designated position information transmission unit 406 generates the designated position information indicating the position coordinates (x, y). There may be a plurality of positions included in the designated position information. Further, the designated position information may be information indicating a range defined by using the position information of three points.

Further, the designated position information transmitting unit 406 may be configured to be able to automatically generate the designated position information based on the history data of the analysis result by the determination unit 404. In this case, the designated position information transmitting unit 406 can read and use the analysis result stored in the storage device 308 or the like in the process of S206 in FIG. As an example, the designated position information transmitter 406 refers to the past analysis result of the storage device 308, and the analysis result that the problem due to the deterioration of the infrastructure may soon surface (for example, the score as an index is equal to or higher than a predetermined threshold value). It is possible to specify the position where the deterioration state level is equal to or higher than a predetermined level, and to generate information indicating the position. Further, the designated position information transmitting unit 406 may generate information indicating a predetermined range centered on the specified position.

The designated position information transmission unit 406 transmits the designated position information generated in the process of S302 to the in-vehicle device 200 (S304). The designated position information transmission unit 406 may transmit the designated position information to the predetermined vehicle-mounted device 200, or may transmit the designated position information to the randomly picked-up vehicle-mounted device 200. Further, the designated position information transmitting unit 406 is a vehicle located within a predetermined range from the designated position information or a vehicle heading toward the position indicated by the designated position information based on the current position information of each vehicle obtained from the in-vehicle device 200. The vehicle-mounted device 200 mounted on the vehicle may be specified, and the designated position information may be transmitted to the vehicle-mounted device 200. Further, the designated position information may include information indicating a collection period (that is, a valid period of the designated position information). The destination address of each in-vehicle device 200 is registered in advance in, for example, a storage device 308.

<Operation example 1 of the in-vehicle device 200>
Next, the processing flow of the in-vehicle device 200 according to the second embodiment will be described with reference to FIG. In the following processing, an example of processing in which the vehicle-mounted device 200 drives the sound collecting unit 202 at the position indicated by the designated position information will be described.

The designated position information acquisition unit 206 acquires the designated position information transmitted from the designated position information transmission unit 406 (S402). The designated position information acquisition unit 206 stores the designated position information acquired here in the memory 106, the storage device 108, or the like.

The sound collecting unit 202 acquires the current position information of the vehicle from the GPS module 1102 at predetermined intervals, for example (S404). Then, the sound collecting unit 202 compares with the designated position information acquired in the process of S402, and determines whether or not it satisfies a predetermined criterion (S406). When the position indicated by the current position information of the vehicle satisfies a predetermined criterion for the position (or range) indicated by the designated position information (S406: YES), the sound collecting unit 202 generates a sound collecting operation (sound data). Then, at least the operation of associating the sound data with the sound collection position information) is started (S408). For example, when the distance between the position indicated by the current position information and the position (or range) indicated by the designated position information is equal to or less than a predetermined value, the sound collecting unit 202 can start the sound collecting operation. In this case, the distance between the position indicated by the current position information and the position (or range) indicated by the designated position information may be calculated by a simple straight line distance or by the distance on the actual route. May be good. On the other hand, when the position indicated by the current position information of the vehicle satisfies a predetermined reference for the position (or range) indicated by the designated position information (S406: NO), the sound collecting unit 202 does not start the sound collecting operation. , Or stop the sound collecting operation (S410). For example, the sound collecting unit 202 does not start the sound collecting operation when the distance between the position indicated by the current position information and the position (or range) indicated by the designated position information is equal to or greater than a predetermined threshold value. If the sound collecting operation has already been performed at this time, the sound collecting unit 202 stops the sound collecting operation.

The flow of transmitting the sound data generated by the above-mentioned sound collecting operation is the same as the flow described in the first embodiment. For example, the transmission unit 204 can transmit the sound data generated during that time to the information processing device 400 according to the timing when the sound collection unit 202 starts the sound collection operation and then stops the sound collection operation. .. Further, the sound collecting unit 202 does not immediately transmit the sound data generated between the start of the sound collecting operation and the stop of the sound collecting operation to the information processing device 400, and the storage device 108 or the like. It may be temporarily accumulated in. In this case, the transmission unit 204 may transmit the sound data stored in the storage device 108 in response to a sound data transmission request from the information processing device 400 or a predetermined sound data transmission timing.

<Operation example 2 of the in-vehicle device 200>
Next, another flow of processing of the vehicle-mounted device 200 in the second embodiment will be described with reference to FIG. In the following processing, an example of processing in which the transmission unit 204 selects the sound data collected at the position indicated by the designated position information and transmits the sound data to the information processing device 400 will be described.

The designated position information acquisition unit 206 acquires the designated position information transmitted from the designated position information transmission unit 406 (S502). The designated position information acquisition unit 206 stores the designated position information acquired here in the memory 106, the storage device 108, or the like.

The sound collecting unit 202 collects sounds (road noise) generated during traveling and generates sound data (S504), separately from the process of acquiring the designated position information of S502. At this time, the sound collecting unit 202 acquires the current position information of the vehicle from, for example, the GPS module 1102, and associates it with the sound data generated in S504 (S506). The current position information acquired in S506 can also be referred to as sound collection position information indicating the position where the sound (road noise) is collected. The sound data generated here may be temporarily stored in the storage device 108 or the like, or may be directly passed to the transmission unit 204. Hereinafter, a case where the sound data is once stored in the storage device 108 or the like will be described.

The sound data generated by the sound collecting unit 202 is transmitted by the transmitting unit 204. Here, the transmission unit 204 reads out the designated position information stored in the memory 106 and the storage device 108 in the process of S502 (S508). Then, the transmission unit 204 identifies the sound data associated with the sound collection position information corresponding to the designated position information read in the process of S508 from the sound data stored in the storage device 108 or the like (S510). ). As an example, the transmission unit 204 identifies sound data associated with current position information indicating a position where the distance from the position (or range) indicated by the designated position information is equal to or less than a predetermined value. Then, the transmission unit 204 transmits the sound data specified in the process of S510 to the information processing device 400 (S512). The information processing device 400 can execute a process of determining the deterioration state of the infrastructure by using the sound data transmitted in this way, as described in the first embodiment.

As described above, in the present embodiment, the sound data corresponding to the position designated by the information processing device 400 is transmitted from the in-vehicle device 200. The position designated by the information processing apparatus 400 is determined, for example, based on the operation input of the operator and the past analysis result. This makes it possible to selectively collect and analyze the sound data at the position that the operator wants to focus on, or the sound data at the position where the deterioration state has progressed to some extent from the past analysis results. ..

[Third Embodiment]
The present embodiment has the same configuration as the first embodiment except for the following points.

〔System configuration〕
FIG. 11 is a diagram illustrating a system configuration of the information collection system 1 according to the third embodiment. As shown in FIG. 11, the vehicle-mounted device 200 and the information processing device 400 are included. The in-vehicle device 200 and the information processing device 400 are communicably connected to each other via a network.

<Functional configuration of in-vehicle device 200>
The vehicle-mounted device 200 of the present embodiment further includes a caution information acquisition unit 208 and a control unit 210 in addition to the configuration of the first embodiment. The caution information acquisition unit 208 acquires the caution information transmitted from the information processing device 400 (external device). The caution information includes at least information regarding the location of the infrastructure determined to be "deteriorated" by the determination unit 404. The control unit 210 controls the operation of various devices mounted on the vehicle 500 based on the caution information acquired by the caution information acquisition unit 208. As an example, the control unit 210 is shown so as to present a warning message to the occupant of the vehicle 500 equipped with the in-vehicle device 200 at a position specified by using the caution information acquired by the caution information acquisition unit 208. Do not control the display device or audio output device.

<Functional configuration of information processing device 400>
In each of the above-described embodiments, the flow in which the determination unit 404 determines the deterioration state of the infrastructure based on the road noise collected by the in-vehicle device 200 has been described. Here, it can be said that the position of the infrastructure determined to be "deteriorated" by the determination unit 404 is a position that requires attention during traveling, and in some cases, a position that is preferable to avoid traveling. That is, the position of the infrastructure determined to be "deteriorated" by the determination unit 404 can be used as a reference for the position where a warning message to the occupants of the vehicle 500 equipped with the in-vehicle device 200 should be output. Therefore, the information processing device 400 of the present embodiment further includes a caution information transmission unit 408 in addition to the configuration of the first embodiment.

When the determination unit 404 determines that the level of deterioration of the infrastructure is equal to or higher than a predetermined level, the caution information transmission unit 408 generates caution information including information on the position (deterioration position) of the infrastructure. Then, the caution information transmission unit 408 transmits the generated caution information to the in-vehicle device 200. The caution information transmission unit 408 is a processing unit paired with the above-mentioned caution information acquisition unit 208.

[Hardware configuration of in-vehicle device 200]
The vehicle-mounted device 200 of the present embodiment has the same hardware configuration as that of the first embodiment (example: FIG. 3). In the present embodiment, the storage device 108 further stores a program module for realizing the functions of the caution information acquisition unit 208 and the control unit 210. The processor 104 further realizes the functions of the caution information acquisition unit 208 and the control unit 210 by reading the program module into the memory 106 and executing the program module.

[Hardware configuration of information processing device 400]
The information processing device 400 of the present embodiment has the same hardware configuration as that of the first embodiment (example: FIG. 4). In the present embodiment, the storage device 308 further stores a program module for realizing the function of the caution information transmission unit 408. The processor 304 further realizes the function of the caution information transmission unit 408 by reading the program module into the memory 306 and executing the program module.

[Operation example]
The flow of processing in the third embodiment will be described with reference to FIGS. 12 and 13. FIG. 12 is a flowchart illustrating the processing flow of the information processing apparatus 400 of the third embodiment. FIG. 13 is a flowchart illustrating the processing flow of the in-vehicle device 200 of the second embodiment.

<Operation example of information processing device 400>
First, the processing flow of the information processing apparatus 400 according to the third embodiment will be described with reference to FIG. Since the processes of S602, S604, and S610 in this figure are the same as the processes of S202, S204, and S206 in FIG. 6, respectively, the description thereof will be omitted here.

The caution information transmitting unit 408 determines whether or not the determination unit 404 has determined that the level of deterioration of the infrastructure has deteriorated to a predetermined level or higher (S606). When it is determined that the level of deterioration of the infrastructure is equal to or higher than a predetermined level (S606: YES), the caution information transmitting unit 408 outputs the deteriorated position information regarding the position of the infrastructure determined to be deteriorated to a predetermined level or higher. get. Here, the position of the infrastructure determined to be deteriorated to a predetermined level or higher is the sound collecting position of the road noise analyzed by the determination unit 404 to determine the deteriorated state of the infrastructure. Then, the caution information transmission unit 408 generates caution information using the acquired deterioration position information. As an example, the caution information transmission unit 408 generates caution information including the acquired deterioration position information and information indicating a caution message. For example, the caution information transmitting unit 408 can select a warning message according to the determination result (degree of deterioration) of the deterioration state of the infrastructure by the determination unit 404. The alert message is stored in, for example, the storage device 308 of the information processing device 400. Then, the caution information transmission unit 408 transmits the generated caution information to the in-vehicle device 200 (S608). Then, the process proceeds to S610, and the determination unit 404 stores the analysis result of the deterioration state of the infrastructure in a predetermined storage unit. If it is not determined that the level of deterioration of the infrastructure is equal to or higher than the predetermined level (S606: NO), the caution information is not transmitted and the process proceeds to S610, and the determination unit 404 determines the analysis result of the deterioration state of the infrastructure. Store in the storage of.

<Operation example of in-vehicle device 200>
Next, the processing flow of the in-vehicle device 200 according to the third embodiment will be described with reference to FIG. In the following processing, an example of processing in which the vehicle-mounted device 200 presents a warning message at a position indicated by the caution information will be described.

The caution information acquisition unit 208 determines whether or not the caution information transmitted from the caution information transmission unit 408 has been received (S702). When it is determined that the caution information has been received (S702: YES), the caution information acquisition unit 208 stores the deteriorated position information and the caution message included in the acquired caution information in the memory 106, the storage device 108, or the like ( S704).

Subsequently, the control unit 210 determines whether or not the position indicated by the caution information is approached (S706). For example, the control unit 210 compares the current position information of the vehicle acquired from the GPS module 1102 with the deteriorated position information stored in the process of S704, and the vehicle approaches the position of the infrastructure deteriorated to a predetermined level or more. Can be determined. Specifically, the control unit 210 sets a predetermined reference (for example, “the difference between the two is equal to or less than a predetermined threshold value” with respect to the position (or range) in which the position indicated by the current position information of the vehicle is indicated by the deteriorated position information. By determining whether or not the conditions are satisfied, the approach to the position indicated by the deteriorated position information can be determined. When it is determined that the vehicle has approached the position of the deteriorated infrastructure (S706: YES), the control unit 210 presents the alert message stored in the process of S704 (S708). Here, the alert message has a content such as "Please be careful about the road surface condition in the future", and is presented in the form of display or voice.

[Modified example of the third embodiment]
The operation of this embodiment is not limited to the above-mentioned example.

For example, the information processing device 400 may transmit caution information that does not include a warning message. In this case, the in-vehicle device 200 that has received the caution information presents a warning message, a warning sound, or the like preset on the in-vehicle device 200 side when the vehicle approaches the position of the infrastructure that has deteriorated to a predetermined level or higher. .. The warning message and the warning sound are stored in advance in, for example, the storage device 108 of the vehicle-mounted device 200. Further, for example, when a warning message or warning sound is stored on the vehicle-mounted device 200 side, the information processing device 400 includes caution information including identification information for identifying the warning message or warning sound in addition to the deteriorated position information. May be generated and transmitted to the in-vehicle device 200. In this case, the control unit 210 can identify the alert message or the warning sound to be output based on the identification information included in the attention information transmitted from the information processing device 400.

Further, for example, the control unit 210 may perform other processing that contributes to the safety of the vehicle while the vehicle is traveling, instead of presenting the warning message when the caution information is received.

First, when the vehicle equipped with the in-vehicle device 200 is an autonomous driving vehicle and automatic driving is possible by a known automatic driving control technology, the control unit 210 determines when the autonomous driving vehicle approaches the position of the deteriorated infrastructure. In addition, the self-driving vehicle may be automatically steered so as to avoid the position of the deteriorated infrastructure. For example, if the vehicle is self-driving and the degraded infrastructure is located in one of the two lanes on each side, the control unit 210 will drive in the lane where the degraded infrastructure does not exist. Control self-driving vehicles. Specifically, the control unit 210 causes the automatic driving control device of the automatic driving vehicle to set the position of the deteriorated infrastructure based on the deteriorated position information included in the acquired caution information as a traveling avoidance point. The automatic driving control device calculates a traveling track that avoids a traveling avoidance point and controls the steering of the autonomous driving vehicle. When the traveling track for avoiding the traveling avoidance point cannot be found, the automatic driving control device may reduce the traveling speed of the autonomous driving vehicle to pass through the traveling avoidance point.

Alternatively, when the computer 100 that realizes the in-vehicle device 200 is a navigation device, the control unit 210 deteriorates the navigation device based on the deterioration position information included in the acquired caution information when searching for a route to the destination. A route that bypasses the location of the infrastructure may be searched for and controlled so as to be presented as a recommended route on a display unit (not shown). As described above, in the third embodiment, the in-vehicle device 200 can execute various processes that contribute to the safety of the vehicle while traveling.

Up to this point, an example has been described in which the information processing device 400 transmits caution information to the in-vehicle device 200 as illustrated in the figure when the information processing device 400 determines that the level of deterioration of the infrastructure is equal to or higher than a predetermined level. The transmission destination of the caution information transmitted by the information processing device 400 is not limited to the in-vehicle device 200 as illustrated in the figure. For example, the information processing device 400 does not have a function of collecting road noise and transmitting it to the information processing device 400, and transmits caution information to an in-vehicle device including a caution information acquisition unit 208 and a control unit 210. May be good. Further, the information processing device 400 may transmit the caution information to the vehicle for infrastructure maintenance equipped with the vehicle-mounted device including the caution information acquisition unit 208.

As described above, in the present embodiment, when it is determined that the level of deterioration of the infrastructure is equal to or higher than a predetermined level based on the analysis result of the collected road noise, cautionary information including information on the position of the infrastructure is provided. Send to multiple in-vehicle devices. Upon receiving the caution information, the in-vehicle device presents information for alerting the occupants of the vehicle when the vehicle approaches the position of the deteriorated infrastructure. This makes it possible to call attention in advance to vehicles approaching the location of the deteriorated infrastructure.

Although the embodiments of the present invention have been described above with reference to the drawings, these are examples of the present invention, and combinations of the above embodiments or various configurations other than the above can be adopted.

Some or all of the above embodiments are not particularly limited, but may be described, for example, as in the following appendix.
1- 1.
A sound collecting part that picks up the sound generated when the vehicle is running,
A filter unit that extracts sound in a predetermined frequency band by passing the sound picked up by the sound collecting unit through a frequency filter, and a filter unit.
A transmission unit that transmits a sound in the predetermined frequency band to an external device in association with sound collection position information indicating the position where the sound is picked up.
In-vehicle device including.
1- 2.
The predetermined frequency band is a band of 1 kHz or less.
1- 1. The in-vehicle device described in.
1-3.
It further includes a support member configured such that the sound collecting portion faces the road surface at the lower part of the vehicle when the in-vehicle device is attached to the vehicle.
1- 1. Or 1- 2. The in-vehicle device described in.
1- 4.
The in-vehicle device can be attached to the lower surface of the outer peripheral portion of the vehicle.
1- 1. ~ 1-3. The in-vehicle device according to any one of the above.
1- 5.
A method of collecting information performed by a computer
The sound collection process that picks up the sound generated when the vehicle is running,
And as factories you extract the sound of a predetermined frequency band through the sound picked up by the sound collecting step to the frequency filter,
A transmission step of transmitting sound in the predetermined frequency band to an external device, and
Information gathering method with.
1- 6.
Computer,
Sound collecting part that picks up the sound generated when the vehicle is running,
A filter unit that extracts the sound in a predetermined frequency band by passing the sound picked up by the sound collecting unit through a frequency filter, and
A transmitter that transmits sound in the predetermined frequency band to an external device,
A program to function as.
2-1.
The acquisition unit that acquires the road noise collected by the in-vehicle device from the in-vehicle device by associating it with the sound collecting position information indicating the sound collecting position of the road noise.
A determination unit that determines the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information.
A designated position transmission unit that generates designated position information based on the history data of the analysis result by the determination unit and transmits it to the in-vehicle device.
Information processing device equipped with.
2-2.
The acquisition unit further acquires time information indicating the sound collection time of the road noise from the vehicle-mounted device.
The determination unit classifies the road noise based on the time information, and analyzes the road noise for each classification based on the time information.
2-1. The information processing device described in.
2-3.
The acquisition unit further acquires environmental information at the time of collecting the road noise from the in-vehicle device.
The determination unit classifies the road noise based on the environmental information, and analyzes the road noise for each classification based on the environmental information.
2-1. Or 2-2. The information processing device described in.
2-4.
The acquisition unit further acquires vehicle type information indicating the vehicle type of the vehicle in which the vehicle-mounted device is arranged from the vehicle-mounted device.
The determination unit classifies the road noise based on the vehicle type information, and analyzes the road noise for each classification based on the vehicle type information.
2-1. ~ 2-3. The information processing device according to any one of the above.
2-5.
When the analysis result of the road noise in a specific time zone is different from the analysis result of the road noise in another time zone, the determination unit excludes it from the element for determining the deterioration state of the infrastructure.
2-1. ~ 2-4. The information processing device according to any one of the above.
2-6.
The determination unit determines the deterioration state of the infrastructure by using the comparison result of the reference noise and the road noise.
2-1. ~ 2-5. The information processing device according to any one of the above.
2-7.
The determination unit uses the road noise collected in the past, which is the road noise collected in the past than the road noise, and the sound collection position is the same, as the reference noise.
2-6. The information processing device described in.
2-8.
The determination unit compares the road noise with the first past road noise collected before the first time of the road noise, and also compares the road noise with the first time. The deterioration state of the infrastructure is determined by comparing with the second past road noise collected before the second time, which is the previous time.
2-7. The information processing device described in.
2-9.
When the determination unit determines that the deterioration state of the infrastructure has deteriorated from a predetermined level, caution information including information on the position of the infrastructure is transmitted to in-vehicle devices of a plurality of vehicles. Further equipped with a transmitter
2-1. ~ 2-8. The information processing device according to any one of the above.
2-10.
It is a method of judging the deterioration of infrastructure executed by information processing equipment.
The acquisition process of associating the road noise collected by the in-vehicle device with the sound collecting position information indicating the sound collecting position of the road noise and acquiring the sound from the in-vehicle device.
A determination step of determining the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information.
A designated position transmission process that generates designated position information based on the history data of the analysis result by the determination process and transmits the designated position information to the in-vehicle device.
How to judge the deterioration of infrastructure with.
2-11.
Computer,
An acquisition means for acquiring from the in-vehicle device by associating the road noise collected by the in-vehicle device with the sound collecting position information indicating the sound collecting position of the road noise.
Judgment means for determining the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information, and
A designated position transmitting means that generates designated position information based on historical data of analysis results by the determination means and transmits the designated position information to the in-vehicle device.
A program to function as.

This application claims priority on the basis of Japanese application Japanese Patent Application No. 2017-036694 filed on February 28, 2017, and incorporates all of its disclosures herein.

Claims (12)

The acquisition unit that acquires the road noise collected by the in-vehicle device from the in-vehicle device by associating it with the sound collecting position information indicating the sound collecting position of the road noise.
A determination unit that determines the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information.
With a designated position transmitter that generates designated position information indicating a position for collecting road noise based on the history data of the analysis result by the determination unit and transmits the designated position information to any in-vehicle device including the in-vehicle device. ,
Information processing device equipped with. The acquisition unit further acquires time information indicating the sound collection time of the road noise from the vehicle-mounted device.
The determination unit classifies the road noise based on the time information, and analyzes the road noise for each classification based on the time information.
The information processing device according to claim 1. The acquisition unit further acquires environmental information at the time of collecting the road noise from the in-vehicle device.
The determination unit classifies the road noise based on the environmental information, and analyzes the road noise for each classification based on the environmental information.
The information processing device according to claim 1 or 2. The acquisition unit further acquires vehicle type information indicating the vehicle type of the vehicle in which the vehicle-mounted device is arranged from the vehicle-mounted device.
The determination unit classifies the road noise based on the vehicle type information, and analyzes the road noise for each classification based on the vehicle type information.
The information processing device according to any one of claims 1 to 3. When the analysis result of the road noise in a specific time zone is different from the analysis result of the road noise in another time zone, the determination unit excludes it from the element for determining the deterioration state of the infrastructure.
The information processing device according to any one of claims 1 to 4. The determination unit determines the deterioration state of the infrastructure by using the comparison result of the reference noise and the road noise.
The information processing device according to any one of claims 1 to 5. The determination unit uses the road noise collected in the past, which is the road noise collected in the past than the road noise, and the sound collection position is the same, as the reference noise.
The information processing device according to claim 6. The determination unit compares the road noise with the first past road noise collected before the first time of the road noise, and also compares the road noise with the first time. The deterioration state of the infrastructure is determined by comparing with the second past road noise collected before the second time, which is the previous time.
The information processing device according to claim 7. When the determination unit determines that the deterioration state of the infrastructure has deteriorated from a predetermined level, caution information including information on the position of the infrastructure is transmitted to in-vehicle devices of a plurality of vehicles. Further equipped with a transmitter
The information processing device according to any one of claims 1 to 8. It is a method of judging the deterioration of infrastructure executed by information processing equipment.
The acquisition process of associating the road noise collected by the in-vehicle device with the sound collecting position information indicating the sound collecting position of the road noise and acquiring the sound from the in-vehicle device.
A determination step of determining the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information.
With the designated position transmission step of generating the designated position information indicating the position where the road noise is collected based on the historical data of the analysis result by the determination step and transmitting the designated position information to any in-vehicle device including the in-vehicle device. ,
How to judge the deterioration of infrastructure with. Computer,
An acquisition means for acquiring from the in-vehicle device by associating the road noise collected by the in-vehicle device with the sound collecting position information indicating the sound collecting position of the road noise.
Judgment means for determining the deterioration state of the infrastructure at the position indicated by the sound collection position information by analyzing the road noise associated with the sound collection position information, and
A designated position transmitting means that generates designated position information indicating a position for collecting road noise based on historical data of analysis results by the determination means and transmits the designated position information to any in-vehicle device including the in-vehicle device .
A program to function as. The designated position transmitter is
Acquire the current position of each of multiple in-vehicle devices,
Using the current positions of each of the plurality of vehicle-mounted devices, one or more vehicle-mounted devices located within a predetermined range from the position indicated by the designated position information are identified from the plurality of vehicle-mounted devices.
The designated position information is transmitted to the one or more in-vehicle devices.
The information processing device according to any one of claims 1 to 9.

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